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Five new coordination polymers based on 5,5′-(1,2-phenylenebis(methoxy))diisophthalic acid (H 4 L), namely [Co 3 (HL) 2 (phen) 2 ] n ·2 n H 2 O ( 1 ), [Mn 2 L(phen) 2 ] n ·2 n H 2 O ( 2 ), [Cu 2 L(4-abpt) 2 (H 2 O) 2 ] n ·2 n DMF ( 3 ), [Co 2 L(bpp) 2 (H 2 O) 3 ] n ·3 n H 2 O ( 4 ) and {(CH 3 ) 2 NH 2 [Co 2 L( μ 3 -OH)(H 2 O) 2 ]·DMF·H 2 O} n ( 5 ) (4-abpt = 4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole, bpp = 1,3-bis(4-pyridyl)propane, phen = 1,10-phenanthroline), have been synthesized and characterized by elemental analyses, IR spectra, PXRD, thermogravimetry and X-ray structural analysis. Complex 1 is a 2D coordination polymer constructing from hexadentate HL 3− ligand, which contains trinuclear cobalt cluster [Co 3 (COO) 6 ] building block. Complex 2 is a 2D coordination polymer assembled by octadentate L 4− ligand. Complex 3 is a 3D metal-organic framework assembled by tetradentate L 4− ligand and 4-abpt linker. Complex 4 exhibits a 2D layered network containing 1D [Co 2 L] n nanotube. Complex 5 is a 2D coordination polymer possessing tetranuclear cobalt cluster Co 4 ( μ 3 -OH) 2 (COO) 4 . Tetracarboxylate exhibits five types of coordination modes. Thermal analyses demonstrate that complexes 1 and 2 were thermal stable up to 400–450 °C. Variable-temperature magnetic studies indicate that complex 1 has ferrimagnetic coupling in the [Co 3 (COO) 6 ] cluster. Complexes 2 and 5 present antiferromagnetic interactions. [ABSTRACT FROM AUTHOR]

Six hydrous Cd(II) coordination polymers based on a scorpion-like 5-(3-pyridylmethoxy)isophthalic acid (H 2 L), namely {[CdL(H 2 O)]·2H 2 O} n ( 1 ), [Cd 4 L 4 (H 2 O) 4 ] n ( 2 ), [CdL(H 2 O)] n ( 3 ), [CdL(H 2 O) 2 ] n ( 4 ), {[CdL(H 2 O)]·H 2 O} n ( 5 ) and [CdL] n ( 6 ), were hydrothermally synthesized and characterized by EA, IR, PXRD, TG-DSC and X-ray structural analysis. Temperature and solvent play crucial roles in the preparation of the coordination polymers. Complexes 1 – 3 were prepared in a H 2 O-DMF (6:2) solvent system at slightly different temperature (85, 100 and 120 °C). Complexes 4 – 6 were prepared in different H 2 O-DMF solvents (6:3 and 8:2) and H 2 O-MeCN (3:6) solvent. These complexes possess different coordinated and/or lattice water molecules, and exhibit structural diversity and various topology nets. Complex 1 is a 2D double-layered coordination polymer. Complex 2 features a 3D porous framework with irl topology. Complex 3 displays a 2D double-layered network. Complex 4 is a 3D coordination polymer with sra topology. Complex 5 exhibits a 3D wave-like framework with sra topology. Complex 6 is a 3D coordination polymer with self-catenated hxg-d topology. 5-(3-Pyridylmethoxy)isophthalate adopts three types of coordination modes. These complexes exhibit higher thermal stability and emit strong luminescence. [ABSTRACT FROM AUTHOR]

Three Cu(I)-cyanide coordination polymers based on trigonal 1,3,5-tris(1H-imidazol-1-yl)benzene (tib) ligand, namely [Cu 3 (CN) 3 (tib)] n ( 1 ), [Cu 4 (CN) 4 (tib)] n ( 2 ), and [Cu 2 (CN) 2 (tib)] n ( 3 ), have been prepared and characterized by elemental analysis, IR, PXRD, thermogravimetry and single-crystal X-ray diffraction analysis. Complex 1 displays a 3D metal-organic framework with nanosized pores. Complex 2 is a 3D coordination polymer assembled by three μ 2 -cyanides and a μ 3 -cyanide with a very short Cu(I)···Cu(I) metal bond(2.5206 Å). Complex 3 is a 2D coordination polymer constructing from 1D Cu(I)-cyanide zigzag chain and bidentate tib spacer. Three Cu(I) complexes are thermally stable up to 250–350 °C. Complexes 1 – 3 show similar orange emission band at 602 nm originating from LMCT mechanism. [ABSTRACT FROM AUTHOR]

Six coordination polymers based on 5-(3-pyridylmethoxy)isophthalic acid (H 2 L), namely [Zn 2 L 2 ] n ( 1 ), [Zn 2 L 2 (1,3-bix)] n ( 2 ), [CdL(1,3-bix)] n ·2 n H 2 O ( 3 ), [CdL(azpy) 0.5 (H 2 O)] n ( 4 ), [CdL(btx) 0.5 ] n ( 5 ), and [CdL(btmb)] n ·2 n H 2 O ( 6 ) (1,3-bix = 1,3-bis(imidazol-1-ylmethyl)benzene, azpy = 4,4′-azobispyridine, btx = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene, btmb = 4,4′-bis(1,2,4-triazol-1-ylmethyl)biphenyl), have been synthesized and characterized by elemental analyses, IR spectra, PXRD, thermogravimetry and X-ray structural analysis. Complex 1 is a 3D coordination polymer, simplified as a 4-nodal (4,4,5,5)-connected topology net with point symbol {4 3 .6 3 }{4 3 .6 2 .8}{4 4 .6 5 .8}{4 4 .6 4 .8 2 }. Complex 2 is a 3D coordination polymer, simplified as a crs - d topology net with point symbol {6;8 2 }{6 2 ;8 3 ;10}. Complex 3 is a 2D coordination polymer with a 2-nodal (3,5)-connected topology net. Complex 4 exhibits a 2D double-layered network with a 2-nodal (3,4)-connected topology net, assembled by two parallel [CdL] n layers pillared by azpy spacer. Complex 5 is a 3D coordination polymer, simplified as a 2-nodal (3,8)-connected topology net with point symbol {4 3 } 2 {4 6 .6 18 .8 4 }. Complex 6 shows a 2D double-layered network with a 2-nodal (3,5)-connected topology net, constructed from wave-like [CdL] n network pillared by btmb spacer. 5-(3-Pyridylmethoxy)isophthalate exhibits five types of coordination modes. Anhydrous or dehydrated substances of 1 – 6 were thermally stable to 300–400 °C. These Zn(II)/Cd(II) complexes emit blue luminescence originating from ligand-centered emission. [ABSTRACT FROM AUTHOR]

Highlights: [•] Six 3-(4-hydroxypyridinium-1-yl)phthalate coordination polymers were prepared. [•] Complex 4 exhibits a 1D nano-tubular structure with larger cavity occupied by (H2O)5 cluster. [•] Four typical coordination modes of 3-(4-hydroxypyridinium-1-yl)phthalate are observed. [•] Complexes 1 and 3 exhibit blue luminescence. [ABSTRACT FROM AUTHOR]

MnII and CoII salts reacting with 4-(4-carboxyphenyl)-4,2′:6′,4″-terpyridine (4-Hcptpy) in DMF/H2O afford two complexes, [Mn(4-cptpy)(DMF)(H2O)2] n ·n(4-cptpy)·nDMF (1) and [Co(4-cptpy)2(H2O)2] n (2). Complex 1 is a 1D ribbon coordination polymer assembled by Mn2 dimer and tridentate 4-cptpy ligand. The guest 4-cptpy anion is embedded in 3D supramolecular architecture with strong hydrogen bonds. Complex 2 is a 1D linear chain coordination polymer with quadrangled pores. The complex 1 releases H2O and DMF in 87–150°C, and the anhydrous [Mn(4-cptpy)] n ·n(4-cptpy) remains thermally stable until 403°C. Variable temperature magnetic susceptibility study in 2–300K proves that a weak antiferromagnetic interaction exists in the (μ-O2CR)2Mn2 core. [ABSTRACT FROM AUTHOR]

Abstract: Four novel coordination polymers constructed from flexible pamoic acid, namely [Co(pam)(4,4′-bipy)] n ·nH2O (1), [Ni(pam)(4,4′-bipy)(H2O)2] n ·2nCH3CN (2), [Cd(pam)(py)2] n ·npy (3) and [Mn2(pam)2(py)6(H2O)2] n ·2npy (4), (H2pam=pamoic acid, 4,4′-bipy=4,4′-bipyridine, py=pyridine), have been synthesized and characterized by elemental analysis, infrared spectra and X-ray crystallography. Complex 1 is a 2-D coordination polymer constructed from chelating bis-bidentate pam and 4,4′-bipyridine bridging ligands. Complex 2 is a 2-D coordination polymer assembled by bis-monodentate pam and 4,4′-bipyridine, where acetonitrile is filled in the rectangle channels. Both 2-D coordination polymers display undulated (4,4) grid layers as sql topology. Complex 3 displays a 1-D polymeric chain using chelating bis-bidentate pam as bridging ligand. Complex 4 exhibits an interesting bis-monodentate pam-Mn(II) 1-D polymeric chain, in which exist two-type six-coordinated manganese centers. Mn(1) is bound to four pyridine ligands, whereas Mn(2) is combined to two pyridine and two H2O molecules. Their thermal stabilities have been investigated. Cadmium complex 3 displays strong green luminescence with emission maximum at 543nm. [Copyright &y& Elsevier]

Abstract: Hydrothermal reactions of Cu(II) salts with 2,4,6-tris(3/4-pyridyl)-1,3,5-triazine (3/4-tpt) and 1,2,4,5-benzenetetracarboxylic acid (H4btec) afforded five novel coordination polymers, namely [Cu4(3-tpt)2(btec)2(H2O)4] n ·6nH2O (1), [Cu(3-tpt)2(H2btec)] n (2), [Cu3(3-Htpt)2(H2btec)2(btec)] n ·4nH2O (3), [Cu2(4-tpt)3(H2btec)2] n ·4nH2O (4), and [Cu3(4-tpt)2(Hbtec)2(H2O)] n ·3nH2O (5). These complexes exhibit various polymeric networks due to diverse coordination modes of tpt and H4btec. Complex 1 displays a 3-D metal–organic framework in which 3-tpt is an exo-tridentate ligand and μ4-btec4− coordinates to two square-pyramidal Cu(II) and two square Cu(II) ions. Complex 2 is a 1-D chain coordination polymer which contains μ2-H2btec2− bridge and monodentate 3-tpt. Complex 3 shows a 3-D metal–organic framework constructed from protonated bidentate 3-Htpt+, tridentate H2btec2− and tetradentate btec4−. Complex 4 is a 1-D ladder-like coordination polymer assembled by μ2-H2btec2−, mono- and bidentate 4-tpt. Complex 5 exhibits a porous 3-D metal–organic framework constructing from tridentate 4-tpt and μ3-Hbtec3−. Their thermal stabilities were also investigated. [Copyright &y& Elsevier]

Abstract: Hydrothermal reaction of CuCN with 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (3-bpo) affords a wave-like infinite chain coordination polymer [Cu2(CN)2(3-bpo)] n (1). Replacement of 3-bpo by its isomer 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (4-bpo) could yields polymer [Cu(CN)(4-bpo)] n (2). In the complex 1, the bent 3-bpo ligand adopts bidentate chelating mode binds with the Cu(I)-cyanide chain to form 16-membered macrocyclic structure. The complex 2 exhibits a layered metal–organic framework, in which exo-bidentate 4-bpo ligand connects the Cu(I)-cyanide chains to form 2-D rectangle grid. Both of these Cu(I) complexes are thermal stable under 200°C and release 3-bpo or 4-bpo ligand in 200–360°C. Luminescent study reveals that 1 has green-light emission, while 2 has blue-light emission. [Copyright &y& Elsevier]

Three polycarboxylate coordination polymers containing 2-(2-pyridyl)benzimidazole as co-ligand, [Cu(Bdc)(2-PyBIm)]n (1), [Cu(HBtc)(2-PyBIm)]n (2) and [Cd2(HBtc)2(2-PyBIm)2]n ·; nH2O (3) (H2Bdc = 1,4-benzenedicarboxylic acid; H3Btc = 1,3,5-benzenetricarboxylic acid), have been synthesized and characterized by elemental analyses, IR spectra, TG-DSC and X-ray structural analyses. Complex 1 is a one-dimensional zigzag chain in which the Cu(II) is cis six-coordinated by two chelating carboxyl groups and a 2-PyBIm ligand. Complex 2 is a two-dimensional (4, 4) network in which H3Btc is partially deprotonated. Complex 3 has a three-dimensional framework in which one Cd(II) is six-coordinate and the other is seven-coordinate. All 2-PyBIm groups are neutral, chelating, bidentate ligands in 1-3. These complexes are quite thermally stable. The luminescence of 3 has also been investigated. [ABSTRACT FROM AUTHOR]

Abstract: Four copper(I) cyanide coordination polymers containing 2-(n-pyridyl)benzimidazole ligands, namely [Cu2(CN)(2-PyBIm)] n (1), [Cu2(CN)2(3-PyHBIm)] n (2), {[Cu3(CN)3(4-PyHBIm)4]·2H2O} n (3) and [Cu5(CN)3(4-PyBIm)2] n (4), have been synthesized and characterized by X-ray crystallography. Complex 1 is a one-dimension coordination polymer in which 2-(2-pyridyl)benzimidazole is deprotonated and adopts a bridging tridentate coordination mode. Complex 2 has ladder-like structure in which 2-(3-pyridyl)benzimidazole does not deprotonate and acts as a bidentate bridge. Complex 3 displays a saddle-shaped helical chain constructed through μ2-cyanide group and the outstretched neutral 2-(4-pyridyl)benzimidazole monodentate ligand. Complex 4 shows two-dimension layer polymeric structure in which deprotonated 2-(4-pyridyl)benzimidazole acts as a tridentate bridging ligand. The cyanide groups in four complexes all act as bidentate bridging ligands. These complexes are thermal stable and display luminescence in the solid states. [Copyright &y& Elsevier]

Abstract: Two azido-bridged coordination polymers, [Ni(L)(μ1,1-N3)2] (1) and [Cu(L)(μ1,1,3-N3)(N3)] (2) (L=1,2-diaminocyclohexane), have been synthesized and characterized by elemental analyses, IR spectra and X-ray structural analyses. Complex 1 is a one-dimensional helical chain coordination polymer with both azides as μ1,1-bridge, which exhibits interesting wheel motif. Complex 2 shows two-dimensional layer network in which an azide acts as μ1,1,3-bridge and the other azide as monodentate ligand. Cyclic voltammogram gives quasi-reversible redox wave of Cu(II)/Cu(I) pair. Variable-temperature magnetic property of 1 was investigated, which shown strong ferromagnetic interaction arising from the μ1,1-azido bridging nickel(II) chains. [Copyright &y& Elsevier]

Abstract: Hydrothermal reaction of CuCN, K3[Fe(CN)6] and 1,10-phenanthroline affords a novel cyanide-bridged copper(I) coordination polymer [Cu3(CN)3(phen)] n (1). The complex displays an interesting one-dimensional neutral double helical framework with (phen)Cu–CN– side-arms as interchain bridges. The double helical chains are close packed in a parallel fashion, and the phen ligands stack in an interpenetrating mode, which leads to π–π interactions between parallel phen planes. The thermal stability and fluorescent property have also been investigated. [Copyright &y& Elsevier]

The solution reactions of metal salts with (+)-dibenzoyl-tartaric acid (H 2 L) and 1,3-bis(4-pyridyl)propane (bpp) or 4,4′-bipyridine (4,4′-bipy) afford three two-dimensional (2D) coordination polymers, [Mn 2 L 2 (bpp) 2 (H 2 O) 4 ] n ·n H 2 O ( 1 ), [CuL(bpp)] n ·n H 2 O ( 2 ) and [CoL(4,4′-bipy)(CH 3 OH)(H 2 O)] n ( 3 ). Dibenzoyl-tartrate ligand displays cis - or trans -conformation, and acts as a 1,4-dicarboxylate linker. Complex 1 features a beautiful 2D double-layered (4,4) network containing [Mn 4 L 2 (bpp) 4 ] tetrahedral cage. The flexible bpp ligand links Mn(II) to form an interesting 64-membered saddle-shaped macrocycle [Mn 4 (bpp) 4 ]. Complex 2 displays a 2D wave-like network assembled by 1D [CuL] n linear chain and 1D [Cu(bpp)] n zigzag chain. Complex 3 is a 2D layered network constructing from [CoL(CH 3 OH)(H 2 O)] n chain and [Co(4,4′-bipy)] n chain. [ABSTRACT FROM AUTHOR]

Two coordination polymers, [Cu(SCN)(3-ptz)]n(1) and [Cu(SCN)(btmb)]n·nCH3CN (2) (3-ptz = 5-(3-pyridyl)tetrazole, btmb = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene), were synthesized and characterized by EA, IR, PXRD and thermogravimetry. Complex 1 is a 2-D coordination polymer constructed from bidentate 3-ptz and 1,3-thiocyanate ligands. Complex 2 is a 2-D wave-like coordination polymer assembled by bidentate btmb and 1,3-thiocyanate ligands. Acetonitrile guest molecule is perched in the tunnel. Complexes 1 and 2 remain stable up to 240°C and 280°C, respectively. Complex 1 emits strong orange luminescence at 590 nm, and complex 2 emits blue luminescence at 468 nm. [ABSTRACT FROM PUBLISHER]

[Display omitted] • Six 5,5′-(1,2-phenylenebis(methoxy))diisophthalate coordination polymers were prepared. • The tetracarboxylic acid displays seven types of coordination modes. • These complexes exhibit 2D networks and 3D porous MOFs. • Mn(II) complexes 1 and 2 have antiferromagnetic couplings. Mn(II)/Cd(II) nitrates react with 5,5′-(1,2-phenylenebis(methoxy))diisophthalic acid (H 4 L) and four dipyridyl-typed N -donor ligands to afford six coordination polymers, {[Mn 2 (L)(bpee) 2 ]·DMF} n (1), {[Mn 3 (H 2 L) 3 (bpmp)(H 2 O) 2 ]·2DMF·2H 2 O} n (2), {[(CH 3) 2 NH 2 ] 2 [Cd(L)]·2H 2 O} n (3), [Cd 2 (L)(H 2 O) 2 (DMF)] n (4), {[Cd(L) 0.5 (bpdb)]·DMF} n (5) and [Cd(H 2 L)(bpp)(H 2 O)] n (6) [bpee = 1,2-bis(4-pyridyl)ethylene, bpmp = 1,4-bis(4-pyridylmethyl)piperazine, bpdb = 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene, bpp = 1,3-bis(4-pyridyl)propane]. These complexes were characterized by elemental analyses, IR spectra, PXRD, thermogravimetry and X-ray structural analysis. H 4 L displays seven types of coordination modes in them. Four complexes are 3D coordination polymers, except 2D wave-like network of complex 3 and 1D double-chain polymer of complex 6. Cd(II) complexes 3 , 4 and 6 display strong blue luminescence. Complex 1 exhibits weak antiferromagnetic coupling in [Mn 2 (μ 2 -COO) 2 (COO) 2 ] dimer, while complex 2 shows antiferromagnetic coupling in [Mn 3 (μ 2 -COO) 6 ] trinuclear cluster. [ABSTRACT FROM AUTHOR]

Four unique complexes with diverse coordination architectures were synthesized upon complexation of 5,5-(1,4-phenylenebis (methylene))bis (oxy)- diisophthalic acid (H 4 L) with zinc ions by using different solvent. namely, {[Zn(H 2 L) (bpp)]·DEF} n ( 1 ), {[Zn 2 (L) (bpp) 2 ]·4H 2 O} n ( 2 ), {[Zn 2 (L) (pdp) 2 ]·3H 2 O·DEF} n ( 3 ), {[Zn 2 (L) (pdp) 2 ].4H 2 O} n ( 4 ). Complexes 1 , 2 and 3 , 4 are obtained by varying solvents to control their structures. The size of solvent molecular plays an important role to control different structure of these compounds. Compound 1 is 2D waved framework with (4, 4) grid layer as sql topology. Compound 3 displays a (4,6)-connected 2-nodal net with a fsc topology. Compounds 2 and 4 are all three-dimensional network simplified as (4,4)-connected 2-nodal net with a bbf topology. The photochemical properties of compounds 1 – 4 were tested in the solid state at room temperature, owing to their strong luminescent emissions, complexes 1 – 4 are good candidates for photoactive materials. [ABSTRACT FROM AUTHOR]

Three Co(II)/Zn(II) coordination polymers containing μ 3 -hydroxide metal clusters are constructing from 3,5-bis(4-carboxybenzyloxy)benzoic acid. Compound 1 is a 3D porous MOF containing [Co 4 (µ 3 -OH) 2 (μ 2 -COO) 4 (μ 3 -COO) 2 ] cluster. Compound 2 is a 1D ribbon coordination polymer containing [Co 3 (µ 3 -OH)(μ 2 -COO) 2 ] cluster. Compound 3 is a 3D porous MOF containing [Zn 4 (µ 3 -OH) 2 (μ 2 -COO) 6 ] cluster. Compounds 1 and 2 exhibit dominant antiferromagnetic interactions accompanied by weak ferromagnetic interactions. [Display omitted] • Three coordination polymers are assembled by 3,5-bis(4-carboxybenzyloxy)benzoic acid. • Complexes 1 and 3 are 3D porous metal–organic frameworks. • Three coordination polymers contain different μ 3 -hydroxide-metal clusters. • Co(II) complexes 1 and 2 exhibit dominant antiferromagnetic interactions accompanied by weak ferromagnetic interactions. Co(II)/Zn(II) nitrates react with 3,5-bis(4-carboxybenzyloxy)benzoic acid (H 3 L) to afford three coordination polymers, [Co 2 (μ 3 -OH)(L)(H 2 O)] n · n H 2 O (1), [Co 3 (μ 3 -OH) 2 (HL) 2 (H 2 O) 4 ] n · n bpmp (2) and [Zn 2 (μ 3 -OH)(L)] n (3) (bpmp = 1,4-bis(4-pyridylmethyl)piperazine). These compounds are characterized by elemental analysis, infrared spectra, thermogravimetry and single crystal X-ray structural analysis. Three coordination polymers contain μ 3 -hydroxide metal clusters. Coordination polymer 1 is a 3D porous metal–organic framework (MOF) containing tetranuclear cluster [Co 4 (µ 3 -OH) 2 (μ 2 -COO) 4 (μ 3 -COO) 2 ]. Coordination polymer 2 shows a 1D ribbon structure constructing from trinuclear cluster [Co 3 (µ 3 -OH)(μ 2 -COO) 2 ] and Y-shaped HL2− ligand. Coordination polymer 3 is a 3D porous MOF containing tetranuclear cluster [Zn 4 (µ 3 -OH) 2 (μ 2 -COO) 6 ] with 23.7 % porosity. Cobalt coordination polymers 1 and 2 exhibit dominant antiferromagnetic coupling (Weiss constant θ = − 40 K), accompanied by ferromagnetic interactions at low temperature. [ABSTRACT FROM AUTHOR]

Highlights: [•] 2D framework constructed from Mn6 units with (4,4)-net. [•] Sodium ions act as connector. [•] 2D complex shows slow magnetic relaxation behavior. [ABSTRACT FROM AUTHOR]

Highlights: [•] Three camphorate coordination polymers were prepared. [•] Complex 1 is a chiral 1D helical chain polymer and 2 exhibits a chiral 2D network. [•] Complex 3 is an achiral 2D polymer in which partial d-camphorate changes to l-camphorate. [•] Complexes 1 and 2 show violet luminescence, 3 exhibits an antiferromagnetic interaction. [ABSTRACT FROM AUTHOR]

Abstract: Reactions of different metal salts with 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole (3-abpt) gave rise to five new complexes, namely [Cu4(CN)4(3-abpt)2] n (1), [CuBr(3-abpt)] n (2), [CuI(3-abpt)] n (3), [Cu3I3(3-abpt)] n (4) and [Cu(3-abpt)(SO4)(H2O)] n (5). Compounds 1, 3, 4 and 5 are all 2D structures. Compound 1 is a double-layered polymer with an uncommon 3-nodal 3-connected (103)(102.4)4 network, 3 shows a 2D square layered structure, 4 is also a double-layered polymer with 2-nodal 4-connected (3.4.5.62.7)2(3.42.52.7) network and 5 is a 2D structure which is ultimately stacked with an ABAB repeat pattern. Compound 2 is a 1D coordination polymer which exhibits a ladder-like network. The photoluminescence of 1–2 has also been investigated. The long emission lifetimes of 1–2 could be assigned to metal-to-ligand charge transfer triple excited states [MLCT]. [Copyright &y& Elsevier]

Abstract: On the basis of triangular-shaped [Mn3O] secondary building units, a novel two-dimensional (2D) manganese(III) complex, [NaMnIII 3O(sao)3(btec)0.5(H2O)3]·1.25H2O (1) (H2sao=salicylaldoxime, H4btec=benzene-1,2,4,5-tetracarboxylate acid), was synthesized and structurally characterized. The structure of 1 consists of 2D coordination polymer based on [Mn3O] units bridged by sodium ions and benzene-1,2,4,5-tetracarboxylate groups. Magnetic data analysis shows that antiferromagnetic couplings exist between the manganese(III) ions in [Mn3O] subunit of complex 1. [Copyright &y& Elsevier]

Three new coordination polymers, [Cu(butca)0.5(bipy)(H2O)]n · 2nH2O (1), [Zn(H2butca) (phen)(H2O)]n · nH2O (2), and [Cd(H2chhca)0.5(phen)(H2O)]n · 2nH2O (3) (H4butca =1,2,3,4-butanetetracarboxylic acid, H6chhca = 1,2,3,4,5,6-cyclohexanehexacarboxylic acid), were prepared and characterized by EA, IR, TG, and X-ray crystallography. Complex 1 is a 1-D double-chain coordination polymer in which tetradentate butca4- coordinates to four Cu(II) ions through four monodentate carboxylates. Complex 2 is a 1-D chain with tridentate H2butca2- coordinating to two Zn(II) ions through monodentate and chelating carboxylates. Complex 3 is a 1-D double-chain coordination polymer. H2chhca4- is octadentate coordinating to four Cd(II) ions through four chelating carboxylates. Hydrogen bonds and π-π stacking interactions play important roles in the formation of supramolecular architectures. The thermal stabilities of 1-3 show dehydrated coordination polymers are thermally stable in the range 260-400°C. [ABSTRACT FROM AUTHOR]

Abstract: Two novel three-dimensional (3D) coordination polymers (1) and ·nH2O (2) (mtta=5-methyltetrazolate, trz=1,2,4-triazole) were synthesized and structurally characterized. Complex 1 shows a 3D porous metal–organic framework. By the topology analysis, the complicated architecture of 1 can be simplified to be the 4-connected diamond-type net. Compound 2 is a two-fold interpenetrating 3,5-connected 3D framework with new topology. [Copyright &y& Elsevier]

Abstract: Reactions of metal acetates with 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole (3-abpt) and co-ligands gave rise to four new complexes, namely [Zn2(3-abpt)(beta)(DMF) (H2O)2] n ·nH2O (1), [Zn(3-abpt)(ip)] n ·3nH2O (2), [Zn(3-abpt)(ip)(H2O)2] n ·2nH2O (3), and [Cu2(3-abpt)2(C6H5COO)4(H2O)2] n ·2nH2O (4) (ip=isophthalate, beta=1,2,4,5-benzenetetracarboxylate). Compound 1 is a 3D coordination polymer with uncommon 3,4-connected (62.8)2(62.82.102) network. Compounds 2–4 are all 1D coordination polymers, which exhibit diversity structures. Compound 2 is a tubular-like chain, 3 is a ring-like network, and 4 is a zigzag chain. Their thermal stabilities and the photoluminescence of 1 have also been investigated. [Copyright &y& Elsevier]

Abstract: Three new copper(II) azide coordination polymers with derivatives of 1,2,4-triazole as bridging coligands, namely [Cu2(admtrz)2(N3)4] n (1) (admtrz=4-amino-3,5-dimethyl-1,2,4-triazole), [Cu(4-abpt)(N3)2] n ·2nH2O (2) (4-abpt=4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole) and [Cu3(2-ptrz)2(N3)6] n (3) (2-ptrz=4-(2-pyridyl)-1,2,4-triazole), were prepared and characterized by elemental analyses, IR spectra and X-ray structural analyses. Compound 1 has a 1D chain structure in which Cu(II) ions are bridged by end-on (EO) azides and admtrz ligands. This compound contains three kinds of coordination modes for Cu(II) ions, including tetrahedral, square pyramidal and octahedral geometries. Compound 2 displays an interesting 3D framework structure, in which the azide ligands link Cu(II) ions in end-to-end (EE) mode affording a 2D square layer. This 2D layers are further bridged by bent 4-abpt ligands to form an interesting 3D framework. Furthermore, this structure also exhibits an alpha-Po net topology. Compound 3 displays a 1D rectangle-like chain structure linked by azides adopting end-on (EO) and end-to-end (EE) modes and 2-ptrz ligands. The IR and thermal stabilities of these coordination polymers 1–3 have also been studied. [Copyright &y& Elsevier]

Hydrothermal reactions of CuCN, K3[Fe(CN)6] with 2,2'-bipyridine, 1,10-phenanthroline or 2,6-bis(1,2,4-triazolyl)pyridine (btp) afford three coordination polymers, [Cu7(CN)7(bipy)2]n (1), [Cu2(CN)2(phen)]n (2) and [Cu3(CN)3(btp)]n (3). Complex 1 displays 1D polymeric ribbons which are assembled through Cu ··· Cu and π-π stacking interactions into a 3D framework. Complex 2 shows a 1D zigzag chain structure in which phen is a side ligand. In 3, the copper cyanide 2D polymeric networks are connected by tridentate btp to form a 3D metal-organic framework. These coordination polymers exhibit strong fluorescent emissions in the solid state. [ABSTRACT FROM AUTHOR]

Two new Cd(II) coordination polymers based on a flexible ligand 5-(bis(4- carboxybenzyl)amino)isophthalic acid (H 4 L) namely {[Cd 2 (L)(NMP) 2 (H 2 O) 2 ]·H 2 O} n (1) and{[Cd 4 (L) 2 (NMP) 2 (H 2 O)]∙2NMP} n (2) (NMP=N-methyl-2-pyrrolidone) have been prepared under hydrothermal conditions. Structural analyses revealed that 1 and 2 all exhibit three-dimensional network structures. Compound 1 shows 4-connect crb topology with [Cd 2 (CO 2) 4 ] as secondary building unit, while compound 2 can be regarded as a new 4,4,8-connect with a {411.615.82}{45.6}{46} topology with tetranuclear [Cd 4 (CO 2) 8 ]. By step-wise synthesis, tetranuclear cluster-based {[Cd 4 (L) 2 (NMP) 2 (H 2 O)]∙2NMP} n (2) can be synthesized successfully by using compound 1. The powder X-ray diffraction, the thermal stabilities, and solid-state luminescence properties of compounds 1 – 2 have also been investigated. Two 3D Cd coordination polymers with different topology were synthesized successfully. By step-wise synthesis, binuclear-cluster units can be transferred to tetranuclear cluster. Image 1 • Achieving the structure transformation from binuclear units to tetranuclear units by employing a step-wise synthesis method. • Two cadmium coordination polymers have been synthesized by using flexibly carboxylic ligand. • A new topology with 4,4,8-connected 3-nodal net. [ABSTRACT FROM AUTHOR]

Abstract: Two new azide complexes, [Cd2(3-abpt)(N3)4] n (1) and [Cu(3-abpt)2(N3)2] (2) (3-abpt = 4-amino-3,5-bis(3-pyridyl)-1,2,4-triazole), have been prepared and structurally characterized. Complex 1 displays an interesting 2D polymeric structure with rarely reported 3,7-connected (32;4)(34;46;56;65) network in the Schafli notation. Complex 2 contains mononuclear pieces, and they are linked each other through weak Cu⋯N coordination bonds to form a 2D sheet with (4,4) topology. The thermal stability and fluorescent property of 1 have also been investigated. [Copyright &y& Elsevier]

Five 5-bromoisophthalate coordination polymers were prepared and structurally characterized. Complexes 1 – 3 are 2D double-layered networks constructed from 1D [M 2 (5-Br-ip) 2 ] n (M = CoII/NiII/ZnII) double chains pillared by azpy and 4,4′-bipy spacers. Complexes 4 and 5 are 3D porous MOFs assembled by 2D wave-like [Zn(bpmba)] n networks connected by 5-Br-ip2− linkers. Complexes 1 and 2 show weak antiferromagnetic couplings in carboxylate-bridged Co 2 (CO 2) 2 and Ni 2 (CO 2) 2 dimers. • Five 5-bromoisophthalate coordination polymers were prepared. • These complexes exhibit 2D double-layered networks and 3D porous MOFs. • Complexes 1 and 2 show antiferromagnetic couplings in carboxylate-bridged CoII/NiII dimers. 5-Bromoisophthalic acid (5-Br-H 2 ip) reacts with metal nitrates and dipyridyl-type auxiliary ligands to afford five coordination polymers, [Co 2 (5-Br-ip) 2 (azpy) 2 ] n ∙2 n H 2 O (1), [Ni 2 (5-Br-ip) 2 (4,4′-bipy) 2 ] n ∙5 n H 2 O (2), [Zn(5-Br-ip)(4,4′-bipy)] n · n H 2 O (3), [Zn 2 (5-Br-ip)(bpmba) 2 (H 2 O) 2 ] n ∙ n DMF(4), [Zn 2 (5-Br-ip)(bpmba) 2 ] n ∙2 n H 2 O (5) (azpy = 4,4′-azobispyridine; 4,4′-bipy = 4,4′-bipyridine; Hbpmba = 3,5-bis(pyridin-4-yl-methoxy)benzoic acid). These complexes are characterized by elemental analysis, IR, PXRD, thermogravimetry and single crystal X-ray structural analysis. Complex 1 is a 2D double-layered network constructed from [Co 2 (5-Br-ip) 2 ] n double-chains pillared by azpy spacers. Complexes 2 and 3 are 2D double-layered networks using 4,4′-bipy as spacer. Complexes 4 and 5 are different 3D porous metal–organic frameworks (MOFs) assembled by 2D wave-like [Zn(bpmba)] n networks and bidentate 5-Br-ip2− linkers. Both complexes show (3,4)-connected jea-type nets of {63}{65·8} topology. The five complexes are thermally stable up to 350–410 °C. Complexes 1 and 2 show weak antiferromagnetic interactions in the carboxylate-bridged Co 2 (CO 2) 2 and Ni 2 (CO 2) 2 dimers. [ABSTRACT FROM AUTHOR]