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Catena-Poly[[bis-(pyridine-?N)zinc(II)]-?-benzene-1,4-dicarboxyl-ato-?O:O].

ABSTRACT: In the title coordination polymer, [Zn(C(8)H(4)O(4))(C(5)H(5)N)(2)](n), the Zn(II) atom, located on a twofold rotation axis, is tetra-coordinated by two monodentate O atoms from two different carboxyl-ate groups and two pyridyl N atoms, forming a distorted tetra-hedral geometry. The Zn(II) atoms are bridged by terephthalate ligands, generating an infinite zigzag chain along [101].

SUBMITTER: Wang LF

PROVIDER: S-EPMC3007002 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature

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catena-Poly[[bis-(pyridine-κN)zinc(II)]-μ-benzene-1,4-dicarboxyl-ato-κO:O].

Wang Li-Fen LF Li Chuan-Qiang CQ Qiu Wen-Ge WG He Hong H

Acta crystallographica. Section E, Structure reports online 20100623 Pt 7

In the title coordination polymer, [Zn(C(8)H(4)O(4))(C(5)H(5)N)(2)](n), the Zn(II) atom, located on a twofold rotation axis, is tetra-coordinated by two monodentate O atoms from two different carboxyl-ate groups and two pyridyl N atoms, forming a distorted tetra-hedral geometry. The Zn(II) atoms are bridged by terephthalate ligands, generating an infinite zigzag chain along [101]. ...[more]

PMID: 21587742

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Poly[tris-(2,5-dimethyl-benzene-1,4--dicarboxyl-ato)bis-(pyridine)trizinc(II)].

Project description:The asymmetric unit of the title polymeric compound, [Zn(3)(C(10)H(8)O(4))(3)(C(5)H(5)N)(2)](n) or [Zn(3)(dmbdc)(3)(py)(2)](n) (dmbdc = 2,5-dimethyl-benzene-dicarboxyl-ate; py = pyridine) contains two Zn(II) ions, one of which is located on an inversion centre, one and a half 2,5-dimethyl-benzene-dicarboxyl-ate ligands and one pyridine ligand. Each ZnO(6) octa-hedron is sandwiched between two ZnO(4)N square-pyramids, forming a trinuclear zinc secondary building unit (SBU); each SBU is further linked by six 2,5-dimethyl-benzene-dicarboxyl-ate ligands with six adjacent trinuclear zinc SBU's, forming a two-dimensional layer structure with a (3,6) net. One of the three zinc ions is octa-hedrally coordinated and the other two are square-pyramidally coordinated. The coordination modes for 2,5-dimethyl-benzene-dicarboxyl-ates are bis-(bidentate) or bidentate-tridentate.

| S-EPMC2983653 | biostudies-literature

catena-Poly[[bis-(1H-imidazole-?N)copper(II)]-?-benzene-1,4-dicarboxyl-ato-?O:O].

Project description:In the title compound, [Cu(C(8)H(4)O(4))(C(3)H(4)N(2))(2)](n), the Cu(II) atom is four-coordinated by two carboxyl-ate O atoms from two different terephthalate ligands and two N atoms from two imidazole ligands in a slightly distorted square-planar coordination environment. Each terephthalate ligand acts as a bis-monodentate ligand that binds two Cu(II) atoms, thus forming two unique chains extending parallel to [110]. The imidazole ligands are attached on both sides of the chains.

| S-EPMC3212110 | biostudies-literature

catena-Poly[[[bis-(4-pyridine-aldoxime-?N (1))zinc]-?-benzene-1,4-dicarboxyl-ato-?(2) O (1):O (4)] 4-pyridine-aldoxime monosolvate].

Project description:In the title compound, {[Zn(C8H4O4)(C6H6N2O)2]·C6H6N2O} n , the Zn(II) ion exhibits a tetra-hedral coordination environment defined by two benzene-1,4-dicarboxylate dianions and two 4-pyridinealdoxime ligands. The dianions bridge the Zn(II) ions, giving a zigzag chain along the b axis. Adjacent chains are connected by O-H?O hydrogen bonds, forming a cavity in which an uncoordinating 4-pyridine-aldoxime mol-ecule is located; this mol-ecule is linked by O-H?O and O-H?N hydrogen bonds to the zigzag chain.

| S-EPMC3629492 | biostudies-literature

catena-Poly[[bis-(1H-benzimidazole-κN)palladium(II)]-μ-benzene-1,4-dicarboxyl-ato-κO:O].

Project description:In the title compound, [Pd(C(8)H(4)O(4))(C(7)H(6)N(2))(2)](n), the Pd atom is tetra-coordinated by two carboxyl-ate O atoms from two benzene-1,4-dicarboxyl-ate (bdc) dianions and two N atoms from two benzimidazole ligands, resulting in a slightly distorted tetra-hedral PdO(2)N(2) geometry. The bdc ligand acts as a bridge, linking the Pd atoms into a chain. Inter-chain N-H⋯O hydrogen bonds help to stabilize the crystal structure.

| S-EPMC2915081 | biostudies-literature

catena-Poly[[[aqua-tris-(pyridine-?N)nickel(II)]-?-2,3,5,6-tetra-chloro-benzene-1,4-dicarboxyl-ato-?O:O] pyridine monosolvate].

Project description:The asymmetric unit of the title compound, {[Ni(C(8)Cl(4)O(4))(C(5)H(5)N)(3)(H(2)O)]·C(5)H(5)N}(n), contains two independent nickel(II) cations displaying a distorted octa-hedral coordination geometry provided by the N atoms of three pyridine mol-ecules, the O atom of a water mol-ecule, and O atoms of two monodentate ?(2)-bridging tetra-chloro-terephthalate dianions. The metal atoms are linked by the dianions into zigzag chains running parallel to [11]. The crystal packing is stabilized by O-H?N and O-H?O hydrogen bonds.

| S-EPMC3011545 | biostudies-literature

catena-Poly[[aqua-bis-(N-benzyl-adenine-?N)copper(II)]-?-benzene-1,4-dicarboxyl-ato-?O:O].

Project description:In the title compound, [Cu(C(8)H(4)O(4))(C(12)H(11)N(5))(2)(H(2)O)](n), the Cu(II) ion is five-coordinated by two carboxyl-ate O atoms from two symmetry-related benzene-1,4-dicarboxyl-ate ligands, two N atoms from two symmetry-related N(6)-benzyl-adenine ligands and one water O atom in a square-pyramidal environment. The Cu(II) and water O atoms lie on a twofold rotation axis, and the benzene-1,4-dicarboxyl-ate ligand lies on an inversion center. The water O atom occupies the apical position and the basal plane is occupied by two O atoms and two N atoms. Each benzene-1,4-dicarboxyl-ate anion acts as a bis-monodentate ligand that binds two Cu(II) cations, forming an infinite chain extending parallel to [001]. The N(6)-benzyl-adenine ligands are attached on both sides of the chain. Neighboring chains are further inter-connected into the resulting three-dimensional supra-molecular architecture via O-H?O, N-H?O and N-H?N hydrogen bonds.

| S-EPMC3200734 | biostudies-literature

catena-Poly[diimidazolium [bis-(?-pyridine-2,5-dicarboxyl-ato)bis-[diaqua-praseodymate(III)]]-bis-(?-pyridine-2,5-dicarboxyl-ato)].

Project description:The title compound {(C(3)H(5)N(2))(2)[Pr(2)(C(7)H(3)NO(4))(4)(H(2)O)(4)]}(n), has a chain structure featuring a dimeric unit consisting of two Pr(III) atoms within a dodecahedral environment. Each of the metal cations is coordinated by two N atoms and two O atoms from two pyridine-2,5-dicarboxyl-ate ligands, two O atoms from another two pyridine-2,5-dicarboxyl-ate ligands and two water O atoms. The Pr(III) ions are bridged by two ligands along the c axis, forming the dimeric unit, and these are connected by four ligands along the b axis, forming a chain. N-H?O and O-H?O hydrogen bonds are found in the structure.

| S-EPMC3089278 | biostudies-literature

catena-Poly[[[aqua-(1,10-phenan-throline)cadmium(II)]-?-benzene-1,4-dicarboxyl-ato] benzene-1,4-dicarboxylic acid hemisolvate].

Project description:A new cadmium(II) coordination polymer, {[Cd(C(8)H(4)O(4))(C(12)H(8)N(2))(H(2)O)]·0.5C(8)H(6)O(4)}(n), has been synthesized under hydro-thermal conditions. The asymmetric unit contains one Cd(II) atom, one benzene-1,4-dicarboxyl-ate anion, one 1,10-phenanthroline ligand, one coordinated water mol-ecule and half of an uncoordinated benzene-1,4-dicaboxylic acid solvent mol-ecule. The Cd(II) atom is in the centre of a monocapped distorted octa-hedron made up of four O atoms of two chelating benzene-1,4-dicarboxyl-ate anions, one water O atom and two 1,10-phenanthroline N atoms. The metal centres are connected via bis-chelating benzene-1,4-dicarboxyl-ate anions into a zigzag chain structure along [001]. These chains are further connected by O-H?O hydrogen bonds between the water mol-ecules and adjacent carboxyl-ate O atoms. Additional O-H?O hydrogen bonding between the uncoordinated benzene-1,4-dicaboxylic acid mol-ecules along [010] consolidates the structure.

| S-EPMC2968137 | biostudies-literature

Poly[[?-1,4-bis-(imidazol-1-ylmeth-yl)benzene]bis-(?(4)-cyclo-hexane-1,4-dicarboxyl-ato)dinickel(II)].

Project description:The structure of the polymeric title compound, [Ni(2)(C(8)H(10)O(4))(2)(C(14)H(14)N(4))](n), features a five-coordinate Ni(II) centre defined by four carboxyl-ate O atoms from two different cyclo-hexane-1,4-dicarboxyl-ate (chdc) ligands and an N atom from one end of a 1,4-bis-(imidazol-1-ylmeth-yl)benzene (1,4-bix) mol-ecule. The NO(4) coordination geometry is distorted square-pyramidal with the N atom in the apical position. Each end of the chdc ligand links pairs of Ni(II) atoms into a paddle-wheel assembly, i.e. Ni(2)(O(2)CR')(4). These are connected into rows owing to the bridging nature of the chdc ligands, and the rows are connected into a two-dimensional grid via the 1,4-bix ligands. The 1,4-bix ligand, which is disposed about a centre of inversion, is disorderd. Two positions of equal occupancy were discerned for the -H(2)C(C(6)H(4))CH(2)- residue.

| S-EPMC2977293 | biostudies-literature

catena-Poly[[[2-(2-pyrid-yl)-1H-benz-imidazole]cadmium(II)]-?-benzene-1,4-dicarboxyl-ato].

Project description:In the title compound, [Cd(C(8)H(4)O(4))(C(12)H(9)N(3))](n), each Cd(II) ion is six-coordinated in a distorted octa-hedral geometry by four carboxyl-ate O atoms from two benzene-1,4-dicarboxyl-ate anions (L), and two N atoms from one 2-(2-pyrid-yl)benzimidazole ligand. The neighboring Cd(II) ions are bridged by the L ligands, forming a zigzag polymeric chain structure. The chains are further extended into a three-dimensional supra-molecular structure through inter-molecular N-H?O hydrogen bonds.

| S-EPMC2977500 | biostudies-literature

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