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In this paper, we fabricate ordered pore array (OPA) Ag film coated glass with the aid of polystyrene sphere (PS) array templates. This kind of OPA Ag coated glass has optical advantages of visible transparency, blue and near-infrared resistance. The average visible transmittance is 68%, including a transmission peak of 78% located at 570 nm, and low average transmittance of 48% in the blue light region that is not damaging to the eyes. The near-infrared light blocking rate is 67%, among which 40% light is reflected directly, indicating the reflection domination.

A novel terbium coordination polymer {[Tb(TCB)1/2(H2TCB)1/2(H2O)](H2O)2}n (H2TCB = 1, 2, 4, 5-benzenetetracarboxylic acid) (1) has been hydrothermally synthesized and determined by single crystal X-ray diffraction method, which features a very interesting three-dimensional framework with large packing cavities. It crystallizes in the monoclinic space group P21/n with a = 1.0723(4) nm, b = 0.7168(3) nm, c = 1.7155(6) nm, β = 97.079(4)°, V = 1.3086(8) nm3, Z = 4, and final R1 = 0.0203, wR2 = 0.0404. In 1, the protonated carboxylate groups are free, the other carboxylate groups are bonded to Tb3+ ion in three modes: the chelating bidentate, the bridging bidentate and bridging tridentate. Moreover each Tb3+ ion is coordinated by nine oxygen atoms from six carboxylate groups and one water molecule respectively to complete a deformed tricapped trigonal prismatic geometry. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

By replacing the distances between pairs of vertices with the relative distances, we define a novel overall hyper-Wiener index (NOR); the novel overall hyper-Wiener index extends the usefulness of the hyper-Wiener index and the overall hyper-Wiener index to unsaturated hydrocarbons.

In the title compound, 2C2H8N+·C10H4O8 2−·2C12H8N2, dimethylammonium cations, 2,5-dicarboxybenzene-1,4-dicarboxylate anions and 1,10-phenanthroline molecules are linked by N—H...N and N—H...O hydrogen bonds into a network structure. The 2,5-dicarboxybenzene-1,4-dicarboxylate anion lies on an inversion center.

Crystals of the title compound, {[Pb2(C9H4O6)2(H2O)4]·H2O}n, were obtained from an aqueous solution. In the crystal structure, each PbII cation is nine-coordinated by seven O atoms from five carboxyl­ate groups of five 1-carboxy­benzene-3,5-dicarboxyl­ate (TBC) dianions and two water mol­ecules. Pairs of Pb atoms are bridged by two tridentate carboxyl­ate groups of two TBC dianions, yielding centrosymmetric dinuclear complexes. These are connected by TBC dianions, forming a three-dimensional network.

In the title compound, (C3H5N2)2[Zn2(C5HN2O4)2(H2O)4], two 3,5-pyrazole­dicarboxyl­ate trianions and two water mol­ecules are coordinated to the Zn atom and the geometry is octa­hedral. Each pair of ZnII ions is bridged by two 3,5-pyrazole­dicarboxyl­ate trianions, forming a centrosymmetric binuclear complex dianion. In the crystal structure, the cations and anions are linked by O—H⋯O and N—H⋯O hydrogen bonds to form a network structure.

In the title compound, [Cu2(C7H6NO4S)2Cl2(C10H9N3)2]·2H2O, each CuII ion is six-coordinated by three O atoms, viz. carboxyl­ate and sulfamoyl O atoms from two 4-sulfamoylbenzoate anions, by two N atoms from a di-2-pyridylamine ligand, and by a Cl atom. Each pair of CuII ions is bridged by two 4-sulfamoylbenzoate anions and each ion has the same coordination environment, forming a dinuclear ring. The dinuclear complex is centrosymmetric.

In the title compound, [Ce2(C5H2N2O4)(C5H3N2O4)4(H2O)6]n, each Ce atom is nine-coordinated by three water mol­ecules, four 3-carboxy­pyrazole-5-carboxyl­ate monoanions (two pairs of symmetry-related anions), and a pyrazole-3,5-dicarboxyl­ate dianion. Two symmetry-related Ce atoms are bridged by a pyrazole-3,5-dicarboxyl­ate dianion, which lies across a twofold rotation axis. There are two independent 3-carboxy­pyrazole-5-carboxyl­ate monoanions which differ in their coordination modes; one is monodentate and the other is tetra­dentate. The Ce atoms are bridged by both pyrazole-3,5-dicarboxyl­ate dianions and 3-carboxy­pyrazole-5-carboxyl­ate monoanions, generating a three-dimensional network structure.

In the title compound, [Cu2(C8H3O7S)(C12H8N2)3(H2O)2]ClO4·3H2O, the 5-sulfonatoisophthalate trianion functions as a bridge between two Cu atoms to form an asymmetric dinuclear cation. One Cu atom is surrounded by four O atoms, two from a 5-sulfonatoisophthalate trianion and two from water ligands, and by two N atoms from a 1,10-phenanthroline ligand. The second Cu atom is bound to two O atoms from a 5-sulfonatoisophthalate trianion and four N atoms from two 1,10-phenanthroline ligands. Both copper centers have a distorted octa­hedral geometry.

The asymmetric unit of the title compound, C10H10N22+·2C9H5O6−·C9H6O6·6H2O, consists of half of a bipyridinium cation, one singly deprotonated 3,5-di­carboxy­benzoate anion, one half of a benzene-1,3,5-tri­carboxyl­ic acid mol­ecule and three water mol­ecules that are linked by hydrogen bonds into a network structure. The two halves of the bipyridinium cation are related by an inversion centre and those of the benzene-1,3,5-tri­carboxyl­ic acid mol­ecule by twofold rotation.

In the title compound, [Zr(C8H5O5)2(C12H10N2)2]·H2O, each Zr atom is surrounded by four carboxyl­ate O atoms of two 5-hydroxy­isophthalate anions and two N atoms of two 1,2-di-4-pyridyl­ethene ligands, the 5-hydroxy­isophthalate anion functioning in a chelating coordination mode. The Zr atom is six-coordinate and the geometry is strongly distorted octahedral. The Zr cation and the water mol­ecule lie on a crystallographic twofold axis.

The title compound, C10H9N2+·C8H4NO6−·C8H5NO6·2H2O, consists of singly protonated 2,2′-bipyridinium cations, 5-nitroisophthalate anions, 5-nitroisophthalic acid and water mol­ecules of crystallization, linked by N—H⋯O and O—H⋯O hydrogen bonds. The moieties are linked by multiple hydrogen bonds into an undulating sheet structure.

In the title compound, {[Ni(C14H8O5)(C12H8N2)]·0.25H2O}n, the Ni atom displays a distorted octahedral geometry defined by four carboxy O atoms from two 4,4′-oxydibenzoate (oba) dianions and two N atoms from a 1,10-phenanthroline molecule. The V-shaped oba anion acts as a bridge between two Ni atoms in a tris-bidentate coordination mode, forming a zigzag coordination polymer.

The asymmetric unit of the polymeric title compound, {[Cu2(C10H2O8)(C3H4N2)4(H2O)2]·C3H7NO} n , contains two independent Cu(II) ions, each coordinated by one water mol-ecule, two imidazole N atoms and two carboxyl-ate O atoms from benzene-1,2,4,5-tetra-carboxyl-ate anions in a distorted square-pyramidal geometry. The benzene-1,2,4,5-tetra-carboxyl-ate anion bridges four Cu(II) ions, forming a polymeric sheet parallel to (010). In the crystal, extensive N-H⋯O and O-H⋯O hydrogen bonds link the polymeric sheets and di-methyl-formamide solvent mol-ecules into a three-dimensional supra-molecular structure.

In the title centrosymmetric compound, [CuBr2(C6H4N2)2], each CuII atom is 4 + 2-coordinated by two pyridine N atoms from two 3-pyridine­carbo­nitrile ligands, two Br− anions and two semicoordinated cyano N atoms from two symmetry-related 3-pyridine­carbo­nitrile ligands. The 3-pyridine­carbo­nitrile ligands link mol­ecules into chains running parallel to the c axis.

In the title compound, [Co(C5H3O4)2(H2O)2]·2C3H7NO, the octahedrally coordinated CoII atom lies on an inversion centre. The equatorial plane of the octahedron comprises two bidentate 1H-imidazole-4,5-di­carboxyl­ate monoanions, coordinated through the N-3 atoms, and one carboxyl­ate O atom, with two water mol­ecules in the axial coordination sites. A one-dimensional chain structure is formed by intermolecular hydrogen bonds in the equatorial plane, between the uncoordinated N atom in the imidazole ring and an uncoordinated carboxyl O atom. The two O atoms of the coordinated water mol­ecules in each chain are engaged in two hydrogen bonds with the uncoordinated carboxyl O atoms of two adjacent chains, forming a two-dimensional network structure.

In the title compound, [Pb2(C7H4O6S)2(C12H8N2)2(H2O)2], two [Pb(phen)(H2O)] moieties are connected together by two Hssa anions, resulting in a centrosymmetric dimer (phen is 1,10-phenanthroline and Hssa is the hydrogen 5-sulfosalicyl­ate dianion). Each PbII cation is surrounded by O atoms from a carboxyl­ate group in a chelating fashion, a sulfonate group in a monodentate mode, a water mol­ecule, and two N atoms from a phen ligand, forming a distorted PbO4N2 octahedron.

In the title complex, {[Cu(C8H4O4)(C10H8N2)]·C3H7NO}n, each Cu atom is surrounded by three O atoms from two terephthalate dianions and two N atoms from a 2,2′-bi­pyridine molecule, forming a distorted square-pyramidal geometry. The terephthalate dianion functions as a bridge between two Cu atoms and forms a one-dimensional zigzag chain coordination polymer.

In the title compound, [Cu2Cl2(C8H4O4)(C12H8N2)2(H2O)2]·[Cu2(C8H4O4)(C12H8N2)2(H2O)4]Cl2·2H2O, each Cu atom has a distorted square-pyramidal geometry, but the coordination environments of the two independent Cu centres (Cu1 and Cu2) are very different. Atom Cu1 is surrounded by an O atom from a terephthalate dianion, an aqua O atom, a Cl atom and two N atoms from a 1,10-phenanthroline ligand. Atom Cu2 is surrounded by an O atom from a terephthalate dianion, two aqua O atoms and two N atoms from a 1,10-phenanthroline ligand. The terephthalate dianions, which function as bridges between the cationic and neutral complexes, lie on inversion centres.

The asymmetric unit of the title compound, C10H13NO2, contains two molecules which are linked via an N—H...N hydrogen bonds to form a dimer. These dimers are further linked via N—H...O intermolecular hydrogen bonds.

Five new copper(II) metal–organic coordination complexes, [Cu2(1,2-bix)2(L)4] (1), [Cu(1,3-bix)(L)2]n·nCH3OH·3H2O (2), [Cu(1,3-bix)(L)2]n·nH2O (3), [Cu5(1,3-bix)2(L)6(NO3)2(H2O)2(OH)2]·2H2O (4) and [Cu(1,4-bix)(L)2]n (5), have been synthesized using 4-carboxybenzaldehyde (HL) and 1,n-bis(imidazol-l-ylmethyl)benzene (1,n-bix; n = 2, 3, 4) as ligands. These complexes were structurally characterized by single-crystal X-ray crystallography and further characterized by FT-IR spectroscopy and thermogravimetric analysis (TGA). Complex 1 is a symmetrical binuclear structure, and in compound 2 the 1D ladders are entangled through π–π stacking interactions to generate a 3D network with one-dimensional micro channel. A 3D coordination framework 2 converted to network 3 by just increasing the reaction temperature. Metal–organic polymer 3 is comprised of 1D corrugated double chains structure. Complex 4 has a pentanuclear (Cu5) cluster structure and compound 5 shows a 1D zigzag chain. The magnetic properties of the complexes 1 and 3 are reported briefly.

In the title compound, {[Pb(sbc)(bpy)]·2H(2)O}(n) [bpy is 2,2'-bipyridine (C(10)H(8)N(2)) and sbc is the 2-sulfonatobenzoate dianion (C(7)H(4)O(5)S)], the Pb(II) ion is bonded to four O atoms including carboxyl-ate and sulfonate from three sbc dianions, and two N atoms from a chelating 2,2'-bipyridine ligand. The sbc ligand acts as a μ(3)-bridging ligand by one O atom of the sulfonate group and the two O atoms of the carboxyl-ate. Of these two last O atoms, one builds up a dinuclear framework arranged around an inversion center whereas the second one links each dinuclear unit, forming a chain extending along the b axis. These polymeric chains are linked through O-H⋯O hydrogen bonds involving the water mol-ecules, forming a layer parallel to (10).

In the title compound, C16H14N4O3S, the electron delocalization in the triazole ring is reflected in the C—N bond lengths.

In the polymeric title complex, [Co(TBC)(BPE)(H2O)2] n [TBC is the 2,5-dicarboxybenzene-1,4-dicarboxylate dianion (C10H4O8) and BPE is 1,2-bis(4-pyridyl)ethene (C12H10N2)], the CoII ion, located on an inversion centre, assumes a distorted octahedral coordination geometry. The TBC and BPE ligands are located across individual inversion centres and bridge neighbouring CoII ions to form two-dimensional polymeric sheets.

The structure of the title compound, C6H12NO2 +·Cl−, consists of an isonipecotate cation and a Cl− anion linked by intermolecular O—H...Cl and N—H...Cl interactions into a three-dimensional network structure.

In the title compound, (C2H8N)2[Cu(C2O4)2(H2O)]·H2O, the cations, anions and water mol­ecules are linked by hydrogen bonds into a network structure. Two oxalate dianions and one water mol­ecule are coordinated to the Cu atom and the geometry is square pyramidal.

In the title compound, C6H5NO3·CH4N2O, 4-nitro­phenol mol­ecules are linked to urea mol­ecules by O—H⋯O and N—H⋯O hydrogen bonds, forming a network structure.

The title compound, (C6H14N2)[Co(H2O)6](SO4)2, consists of hexaaquacobalt(II) cations, 1,4-diaza­bicyclo­[2,2,2]octa­ne cations and sulfate anions, linked by O—H⋯O hydrogen bonds. The geometry around the Co2+ cation is octa­hedral.

In the title compound, [Ni(C14H8O5)(C10H8N2)]n, the NiII atom is coordinated by four O atoms of two 4,4′-oxydibenzoate (oba) dianions and two N atoms of a chelate 2,2′-bipyridine ligand to furnish a distorted octahedral coordination environment. The V-shaped oba dianion acts as a bridge between two Ni atoms to form a zigzag chain coordination polymer.

In the title compound, [Cu2(C8H4O4)(C10H8N2)4](ClO4)2·2H2O, each Cu atom is surrounded by an O atom of a terephthalate dianion and four N atoms of two 2,2′-bi­pyridine mol­ecules, forming a distorted square-pyramidal geometry. The terephthalate dianion functions as a bridge between two Cu atoms and forms a dinuclear complex.

In the crystal structure of the title compound, [Co2(C14H8O5)2(C12H8N2)2(H2O)2]n, the dianion functions as a bridging ligand, bonding through both carboxyl –CO2 end groups to link symmetry-related [Co(C12H8N2)(H2O)] entities into a ribbon structure.

We have developed a catalyst-free system for the 3-sulfenylation of free (N–H) indoles using mercaptobenzoic acid under alkaline conditions. The use of this system provides a green, convenient, and efficient method for the synthesis of 3-sulfenylindoles in good yields and with high selectivity. This simple synthesis process was carried out in a green solvent, isopropanol/H2O, under atmospheric and catalyst-free conditions. The procedure is suitable for use with N-unprotected indoles.

In the title compound, [Cu(C8H3NO6)(C10H8N2)]n, the Cu atom exists in a four-coordinate environment defined by two carboxyl O atoms belonging to two 5-nitro­isophthalate dianions and two N atoms from a 2,2′-bipyridine molecule. The 5-nitro­isophthalate dianion acts as a bridge between two Cu atoms in a tris-monodentate coordination mode, resulting in a zigzag coordination polymer.

The title compound, [CuBr(C3H4N2)2(C10H8N2)]Br, consists of bromo­di­imidazole(2,2′-bi­pyridine)copper(II) cations and bromide anions that are linked by hydrogen bonds into a network structure. Two imidazoles, a 2,2′-bi­pyridine and a bromide anion are coordinated by the Cu atom, whose geometry is distorted towards octahedral because of the second bromide anion.

The title compound, (C10H10N2)[Co(H2O)6](SO4)2, consists of 4,4′-bipyridinium dications, hexa­aqua­cobalt(II) cations and sulfate anions that are linked by hydrogen bonds into a network structure. Six water mol­ecules are coordinated to the Co atom and the geometry is octahedral. The bipyridinium cation has site symmetry 2 and the Co atom lies on a position of site symmetry 2/m.

The title compound, C10H10N22+·2C7H5O5S2−·2H2O, consists of diprotonated 4,4′-bipyridinium cations, 2-sulfonato­benzoic acid anions and water molecules of crystallization, linked by N—H⋯O and O—H⋯O hydrogen bonds. The cation has crystallographic twofold rotation symmetry.

By reaction of cobalt(II) sulfate with 5-hydroxy­isophthalic acid and 2,2′-bi­pyridine in a water–di­methyl­form­amide solution, the title novel sulfate-anion-bridged inorganic–organic hybrid, [Co(C10H8N2)(H2O)2SO4]n, has been synthesized. Structural characterization of the complex shows that it displays a polymeric linear structure, formed by sulfate bridges between six-coordinate CoII ions that lie on twofold rotation axes. Hydrogen bonding between chains results in a two-dimensional framework stucture.

In the centrosymmetric title complex, [Co2Cl2(C8H4O4)(C12H8N2)2], each Co atom is surrounded by one O atom from a terephthalate dianion, a Cl atom and two N atoms from a 1,10-phenanthroline heterocycle in a distorted square-planar arrangement. The terephthalate dianion lies on an inversion centre and bridges two Co atoms.

In the centrosymmetric title compound, [Cu2(C8H4O4)Cl2(C12H8N2)2(H2O)2], each Cu atom is surrounded by an O atom from a terephthalate dianion, a water mol­ecule, a Cl atom and the N atoms from a 1,10-phenanthroline heterocycle in an octahedral arrangement. The terephthalate dianion, which functions as a bridge between two Cu atoms, lies on a special position of \overline 1 site symmetry.

In the title compound, [Cu(H2O)6](ClO4)2·2H2O, six water mol­ecules are coordinated to one Cu2+ ion, which lies on an inversion centre. The geometry around the Cu2+ ion is that of an octahedron. The coordinated water mol­ecules, uncoordinated water mol­ecules and perchlorate ions are linked by hydrogen bonds into a network structure.

In the title compound, [Ni2(C10H2O8)(C10H8N2)2(H2O)6].2H2O, the benzene­tetra­carboxyl­ate anion, which lies on a center of symmetry, is monodentate to two bi­pyridine-chelated water-coordinated Ni atoms. The geometry of the Ni atom is that of an octahedron. The coordinated and uncoordinated water mol­ecules are linked by hydrogen bonds into a network structure.

In the title compound, [CuCl(C12H8N2)2]2(C10H4O8)·2H2O, the CuII cation has a five-coordinate environment made up of one chloride anion and four N atoms of two 1,10-phenanthroline ligands. Hydro­gen bonds between the benzene-1,2,4,5-tetra­carboxyl­ate(2−) anion and water mol­ecules produce a linear hydrogen-bonded chain. The anion lies on a special position of \overline 1 site symmetry.

In the title compound, C9H10N2O4S, which is an important intermediate for the preparation of antitumor platinum drugs, the dioxolane ring adopts an envelope conformation with the C atom bonded to the thienyl ring at the flap position. Intramolecular N—H...O and C—H...O hydrogen bonds result in the formation of two five-membered rings having envelope conformations. In the crystal structure, intermolecular N—H...O and C—H...O hydrogen bonds link the molecules into a three-dimensional network.

In the molecule of the title compound, C11H11FN2O4, the five-membered ring adopts an envelope conformation. An intramolecular N—H...F hydrogen bond occurs. In the crystal structure, intermolecular N—H...O hydrogen bonds link the molecules.