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By using a new 4,6‐bis(imidazol‐1‐yl) isophthalic acid ligand (H2bimip) with imidazolyl and carboxyl bifunctional groups, three new MOFs, [Co(bimip)(H2O)0.5]⋅0.5 H2O (1), [Zn(bimip)] (2), and [Mn(bimip)(H2O)2]⋅H2O (3), have been solvothermally synthesized in different solvent systems. H2bimip displays three different coordinated modes through the imidazolyl and carboxyl groups, and different cis–cis and trans–cis configurations, which result in distinct 3D topological frameworks: a (4,8)‐connected scu net for 1; a twofold interpenetrated (4,4)‐connected pts net for 2; and a four‐connected sra net for 3. Compounds 1 and 3 show antiferromagnetic properties, and 2 emits strong solid‐state blue luminescence. Compound 1 shows good chemical stability in acidic and basic environments and in boiling water. Additionally, the polar channels in 1, which are decorated by uncoordinated carboxylate O atoms and imidazolyl fragments, allow it to adsorb CO2 molecules selectively over CH4, and the CO2 binding sites in the framework were distinguished by molecular simulations. [ABSTRACT FROM AUTHOR]

Five new 3D MOFs: {[Zn3(HL)2H2O]·4H2O}n (1), {[Ba2L5H2O]·2H2O}n (2), {[Ba4(L)2·5H2O]·2H2O}n (3), {[Cd3(HL)2·Cl2·2H2O]·2H2O}n (4) and {[Cu2(L)2·2H2O]·4H2O}n (5), were constructed based on 1-(3,5-dicarboxylatobenzyl)-3,5-pyrazole dicarboxylic acid. Structural analysis shows that 1–5 have 3D frameworks, among which 1(Zn) exhibits high luminescence sensing for Fe3+ ions, excellent framework stability and reusability. The sensing mechanism of 1(Zn) is briefly discussed. In addition, 5(Cu) displays antiferromagnetic exchange phenomena. [ABSTRACT FROM AUTHOR]

Abstract In order to explore the metal ions-controlled syntheses of coordination polymers (CPs), the temperature and solvent ratio were fixed in the reaction processes. By selecting a series of s- and d-block metal ions, five new CPs, [ZnL 0.5 (H 2 O) 2 ] n (1), [CoL 0.5 (H 2 O) 2 ] n (2), [Mn(H 2 L)(H 2 O) 2 ] n (3), [Ca(H 2 L)(H 2 O) 2 ] n (4) and [Ba(H 2 L)(H 2 O) 2 ] n (5), have been synthesized by employing a less-investigated oxalamide N,N′ -bis(4-phthalic acid) (H 4 L) ligand. H 4 L shows very versatile coordination modes and leads to various frameworks, including isomorphous 2D grid-like layer based on M 2 O 2 cores for 1 and 2 , isomorphous 4-connected 3D PtS frameworks based on 1D [M(CO 2) 2 ] n chains for 3 and 4 , and a 2D wave - like layer based on [BaO 3 ] n chains for 5. 2 and 3 reveal the antiferromagnetic and ferromagnetic properties, respectively, while 1 , 4 and 5 possesses strong solid state luminescence. Graphical abstract Five new CPs with magnetic properties and luminescence have been constructed based on s- and d-block metals, and the oxalamide N,N′ -bis(4-phthalic acid) ligand displays versatile coordination modes and various architectures. fx1 Highlights • Five CPs were constructed by an oxalamide N,N′ -bis(4-phthalic acid) ligand. • The versatile coordinated modes of ligands lead to various architectures of CPs. • Antiferromagnetic and ferromagnetic properties as well as luminescence were found. [ABSTRACT FROM AUTHOR]

The reactions of an unexploited N,N′‐5‐carboxyl‐1,3‐phenylenebis(ethyl oxamate) (HEt2L) ligand with different Mn2+ and Cd2+ salts under solvothermal conditions afforded four three‐dimensional (3D) coordination polymers (CPs): [Mn1.5L(H2O)2]⋅H2O (1) [Mn2L(C2O4)0.5(NMP)(H2O)] ⋅ NMP (2), [Cd1.5L(H2O)2.5] ⋅ H2O (3) and [Cd2L(C2O4)0.5(H2O)3] ⋅ H2O (4) (NMP=N‐methyl pyrrolidone). L, generated by the in‐situ hydrolysis of HEt2L, displays four kinds of coordinating modes through oxamate and carboxylate groups as well as different syn‐syn and syn‐trans configurations. The resulting novel (3,4,5)‐, (3,4,6)‐, (4,5)‐ and (4,4,4,5)‐connected topologies for 1–4 were formed. Among them, 1 has interesting 1D metal‐oxamate zigzag chains, 2 contains 1D channels with a free void of 52.5 %, 3 consists of an unprecedented Cd‐oxamate layer, 4 has a novel Cd‐oxamate‐oxalate chain. The antiferromagnetic interactions of 1 and 2 were observed, meanwhile 3 and 4 exhibit solid‐state luminescence with the maximum emission bands at 483 and 479 nm, respectively, under an excitation of 332 nm. Structural Diversity: Four novel coordination polymers (CP) were constructed by Mn2+ and Cd2+ ions with N,N′‐5‐carboxyl‐1,3‐phenylenebis (oxamic acid), showing framework diversity caused by various ligand coordinating modes (See figure). In addition, antiferromagnetic interactions and exhibit solid‐state luminescence properties were investigated. [ABSTRACT FROM AUTHOR]

Three metal-organic frameworks (MOFs), [Cd(Hpzbpdc)(H2O)].H2O (1), [Mn2(Hpzbpdc)2(dmf)2] (2), and [H2N(CH3)2]0.5[Eu(Hpzbpdc)1.5(HCOO)0.5(dmf)0.5].DMF.0.5H2O (3) (H3pzbpdc=4'-(2H-pyrazol-3-yl)biphenyl-3,5-dicarboxylic acid), have been solvothermally synthesized from one pyrazoyl-carboxyl bifunctional ligand and characterized by single-crystal structures. The H3pzbpdc ligand in 1-3 displays various coordination modes through the pyrazoyl and carboxyl groups. Both 1 and 3 contain dinuclear cluster building units and reveal a four-connected gismondine (gis) zeolite 3D framework and a 2D grid layer structure, respectively. Compound 1 shows blue luminescence, compound 3 reveals red luminescence that arises from efficient energy transfer from the organic ligand to the europium(III) ion, and compound 2 reveals an uncommon (3,8)-connected tfz-d; UO3 net with a rare Mn6(COO)6 cluster and shows antiferromagnetic interactions between the manganese( II) ions. [ABSTRACT FROM AUTHOR]

By treating a semirigid 5-oxyacetate isophthalic acid (H3OAIP) ligand with MnSO4/CoSO4/CdSO4 under solvothermal conditions, three isostructural cluster organic frameworks, [M2(OH)(OAIP)(DMA)] ⋅H2O (M=Mn2+ ( 1), Co2+ ( 2), Cd2+ ( 3); DMA= N,N′-dimethylacetamide) were constructed. The three complexes contain novel eight-connected tetranuclear M4(OH)2(COO)6(OCH2COO)2 clusters with the unique hexagonal bipyramidal configuration, which are extended by four-connected OAIP linkers to form an uncommon (4,8)-connected alb-4,8-Cmce topology based on (3,6)-connected kgd sublayers. Both 1 and 2 showed significant antiferromagnetic interactions between the intracluster metal ions, whereas 3 revealed strong blue photoluminescence. [ABSTRACT FROM AUTHOR]

A series of new 1D isomorphic lanthanide metal-organic frameworks (Ln-MOFs), {[Ln(L)(H 2 O) 5 ]·2H 2 O} n (1-Ln , Ln ​= ​Eu, Tb, Dy and Eu x Tb 1-x), were synthesized via a rigid bifunctional N,O-containing 2-(1 H -tetrazol-5-yl)terephthalic acid (H 2 L) and Ln(III) ions as raw materials. It is worth noting that different ratios of Eu(III) and Tb(III) can be combined into the same Ln-MOFs to generate a series of new differently doped 1-Eu x Tb 1-x MOFs. Under the same excitation wavelength, the double emission peaks of Eu(III) and Tb(III) are produced, and the emission color gradually changes between yellow-green, yellow, orange, and red. The sensing studies have shown that 1-Tb is an excellent reusable luminescence probe, suitable for simultaneous detection of dimetridazole (DMZ), metronidazole (MDZ) and tetracyclinehydrate (TET) in the aqueous solutions. Furthermore, magnetic measurements show that 1-Dy has slow magnetic relaxation properties. A series of new 1D isomorphic lanthanide metal-organic frameworks (Ln-MOFs), {[Ln(L)(H 2 O) 5 ]·2H 2 O} n (1-Ln , Ln ​= ​Eu, Tb, Dy and Eu x Tb 1-x), had been synthesized, and the 1-Eu x Tb 1−x doped MOFs achieve tunable emission from yellow-green to yellow to red. Besides, 1-Tb can be used to detect dimetridazole (DMZ), metronidazole (MDZ), and tetracycline (TET) in water and serum sensitively and selectively through fluorescence quenching, and 1-Dy has a slow magnetic relaxation performance. [Display omitted] • Series of isostructural Ln-MOFs had been synthesized by a rigid ligand. • A series of doped 1-Eu x Tb 1−x MOFs were obtained to achieve tunable emission. • 1-Tb has the high selectivity and sensitivity to detect DMZ, MDZ and TET. • 1-Dy has the slow magnetic relaxation properties. [ABSTRACT FROM AUTHOR]

Employing an uninvestigated eight N-donor bitriazole ligand, 5'-(pyrazin-2-yl)-2H,4'H-3,3'-bi(1,2,4-triazole) (H2pzbtz), five complexes, {[Zn2(pzbtz)(SO4)(H2O)2]·2H2O}n (1), {[Cd(pzbtz)]·3H2O}n (2), [Zn3 (Hpzbtz)2(SO4)2(H2O) 6] (3), [Co(Hpzbtz)2(H2O)2] (4) and {[Co2(pzbtz)2(H2O)2]·4H2O}n (5), have been solvothermally synthesised by altering the reaction solvents and temperatures. Complex 1 shows a three dimensional (3D) framework with a very rare (3,5)-connected fsc-3,5-Cmce-2 topology. Complex 2 exhibits a (4,4)-connected 3D pts framework with 1D channels. Complexes 3 and 4 are discrete trinuclear and mononuclear molecules, respectively. Complex 5 presents a chiral 3D framework based on a novel trinuclear Co3 (tr) 4 cluster and features an unusual six-connected lcy topology. In the five complexes, H2pzbtz show a very variety of geometrical configurations and coordination modes. Due to the planarity of H2pzbtz, complexes 1-3 display strong photoluminescence; in particular, 1 features highly selective luminescent sensing for the Cu2+ ion and nitrobenzene molecule. In addition, 2 shows highly selective adsorption for CO2 over CH4, and 5 exhibits antiferromagnetic exchange interactions among the Co2+ ions. [ABSTRACT FROM AUTHOR]

Seven new complexes based on the bifunctional ligand were synthesized under hydro(solvo)thermal conditions. 1 – 7 adopts different coordination modes and generates diverse 1D or 2D structures. • The L2−/HL− ligand in 1 – 7 adopts different coordination modes and generates diverse structures. • Compound 1 shows highly selective and sensitive response to Fe3+. • Compound 1 shows highly selective sensitivity for Cr2O 7 2− and MnO 4 2−. Seven new complexes based on 4-(3-carboxyl-1,2,4-1H-triazol-1-yl)benzoic acid (H 2 L), namely [Zn(L)(H 2 O) 2 ] n (1), [Cd(L)(H 2 O) 2 ] n (2), [Pb(HL) 2 ] n (3), [Pb(L)(H 2 O)] n (4), [Cu(L)(H 2 O) 2 ] n (5), [Co(L)(H 2 O) 2 ] n (6) and [Mn(L)(H 2 O) 2 ] n (7), were synthesized by employing different center metal ions and a imidazol-carboxyl bifunctional ligand (H 2 L) under hydro(solvo)thermal conditions. The L2−/HL− ligand in 1 – 7 adopts different coordination modes and generates diverse 1D or 2D structures. The luminescent and magnetic properties of seven complexes were investigated in detail. Moreover, complex 1 shows high selectivity for Fe3+, Cr 2 O 7 2− and MnO 4 − ions, indicating that 1 can be an excellent candidate for luminescence sensing. In addition, complexes 5 , 6 and 7 demonstrate antiferromagnetic interactions. [ABSTRACT FROM AUTHOR]