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Poly[[(N,N-dimethyl-formamide-κO)(μ(3)-pyrazine-2,3-dicarboxyl-ato-κN,O:O:O)copper(II)] monohydrate].

ABSTRACT: In the title compound, {[Cu(C(6)H(2)N(2)O(4))(C(3)H(7)NO)]·H(2)O}(n), the Cu(II) atom is coordinated by an N,O-bidentate pyrazine-2,3-dicarboxyl-ate (pzdc) dianion, two O atoms from two other pzdc anions and one O atom from the dimethlyformamide ligand, forming a distorted square-pyramidal CuNO(4) geometry. The polymeric character of the structure is established by the formation of layers parallel to (100) via bridging pzdc ligands. O-H⋯O hydrogen bonding between water mol-ecules and uncoordinated carboxyl-ate O atoms leads to additional stabilization of the structure.

SUBMITTER: Fan ZZ

PROVIDER: S-EPMC2979988 | biostudies-literature |

REPOSITORIES: biostudies-literature

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catena-Poly[[[triaqua-copper(II)]-μ(2)-pyrazine-2,3-dicarboxyl-ato] monohydrate].

Project description:The Cu atom in the title complex, {[Cu(C(6)H(2)N(2)O(4))(H(2)O)(3)]·H(2)O}(n) or {[Cu(L)(H(2)O)(3)]·H(2)O}(n) (L is pyrazine-2,3-dicarbox-yl-ate), displays octa-hedral coordination formed by the ligand L and three coordinated water mol-ecules. The ligand L is tridentate, with one N atom of the pyrazine ring and one O atom of one carboxyl-ate group forming a chelate ring, whereas one O atom from the second carboxyl-ate group is coordinated to another Cu atom. The ligand L links mol-ecules to form an infinite chain parallel to the [101] direction. The chains are further linked through O-H⋯O and O-H⋯N hydrogen bonds involving the water mol-ecules to build up a three-dimensional network.

| S-EPMC2914943 | biostudies-literature

catena-Poly[[[(1,10-phenanthroline-κN,N')zinc]-μ-pyridine-2,3-dicarboxyl-ato-κN,O:O,O] monohydrate].

Project description:In the title complex, {[Zn(C(7)H(3)NO(4))(C(12)H(8)N(2))]·H(2)O}(n), the Zn(II) ion is in a distorted octa-hedral environment, defined by two N atoms from a chelating 1,10-phenanthroline (phen) ligand and one N atom and three O atoms from two pyridine-2,3-dicarboxyl-ate (2,3-pydc) ligands. The bridging 2,3-pydc ligands connect the Zn(II) ions into a chain extending along [010]. O-H⋯O hydrogen bonds between the uncoordinated water mol-ecules and the uncoordinated carboxyl-ate O atoms, as well as π-π inter-actions between the pyridine rings of the phen ligands [centroid-centroid distance = 3.557 (2) Å], are observed.

| S-EPMC3152098 | biostudies-literature

Tris(3,5-dimethyl-1H-pyrazole-κN)(pyridine-2,6-dicarboxyl-ato-κO,N,O)cobalt(II) monohydrate.

Project description:The reaction of Co(NO(3))(2)·3H(2)O with pyridine-2,6-dicarboxylic acid and 3,5-dimethyl-1H-pyrazole in a 1:1:3 molar ratio affords the title complex, [Co(C(7)H(3)NO(4))(C(5)H(8)N(2))(3)]·H(2)O. The Co(II) atom is coordinated by one pyridine-2,6-dicarboxyl-ate chelating ligand and three 3,5-dimethyl-1H-pyrazole ligands in a distorted octa-hedral geometry. Hydrogen-bonding interactions involving the coordinated carboxylate group, 3,5-dimethyl-1H-pyrazole and water help to consolidate the crystal structure.

| S-EPMC2969004 | biostudies-literature

Poly[[(μ(2)-benzene-1,4-dicarboxyl-ato-κO,O:O,O)(μ(2)-di-4-pyridyldiazene-κN:N)cobalt(II)] N,N-dimethyl-formamide disolvate hemihydrate].

Project description:In the title compound, {[Co(C(8)H(4)O(4))(C(10)H(8)N(4))]·2C(3)H(7)NO·0.5H(2)O}(n), the Co(II) atom is six-coordinated by four O atoms from two benzene-1,4-dicarboxyl-ate (H(2)bdc(2-)) groups and two N atoms from two 4,4'-azopyridine (4,4'-azpy, or di-4-pyridyldiazene) ligands, leading to a distorted octa-hedral geometry. The structure consists of two-dimensional corrugated sheets with a 4(4) topology in an …ABAB… packing pattern stacking along the a axis. The separation of the adjacent corrugated sheets is ca. 8.561 (2) Å (Co⋯Co distance) along the a axis. The uncoordinated water molecule is half-occupied. The crystal structure is stabilized by O-H⋯N and C-H⋯O hydrogen-bonding inter-actions.

| S-EPMC2969999 | biostudies-literature

Poly[[μ(4)-naphthalene-1,4-dicarboxyl-ato-κO:O':O'':O'''-μ(2)-naphthalene-1,4-dicarboxyl-ato-κO,O':O'',O'''-bis-(2-phenyl-1H-1,3,7,8-tetra-azacyclopenta-[l]phenanthrene-κN,N)dimanganese(II)] N,N-dimethyl-formamide solvate].

Project description:One of the two 1,4-dicarboxyl-ate dianions in the title compound, [Mn(2)(C(12)H(6)O(4))(2)(C(19)H(12)N(4))(2)]·C(3)H(7)NO, uses its two carboxyl-ate groups to chelate two N-heterocycle-chelated Mn atoms; the other 1,4-dicarboxyl-ate dianion binds to four such metal centers. The octa-hedrally coordinated Mn atoms are linked through the two dianions into a layer motif; the dimethyl-formamide mol-ecules occupy the spaces between adjacent layers. Ten C atoms and attached H atoms of one dianion are disordered equally over two positions.

| S-EPMC2961267 | biostudies-literature

catena-Poly[[[diaqua-iron(II)]-μ-pyrazine-2,3-dicarboxyl-ato] dihydrate].

Project description:The crystal structure of the title compound, {[Fe(C(6)H(2)N(2)O(4))(H(2)O)(2)]·2H(2)O}(n), was synthesized by a diffusion method. It has a one-dimensional polymeric chain structure and the chains are further connected into a three-dimensional structure by hydrogen bonds. The Fe(II) ion has a distorted octa-hedral coordination environment, with two N and two O atoms from the pyrazine-2,3-dicarboxyl-ate ligands in the equatorial plane and with two water mol-ecules in axial positions. The Fe atom lies on a crystallographic centre of symmetry and a twofold rotation axis passes through the pyrazine ring.

| S-EPMC2915058 | biostudies-literature

catena-Poly[[aqua-(dipyrido[3,2-a:2',3'-c]phenazine-κN,N)zinc(II)]-μ-pyrazine-2,3-dicarboxyl-ato-κN,O:O].

Project description:In the title compound, [Zn(C(6)H(2)N(2)O(4))(C(18)H(10)N(4))(H(2)O)](n) or [Zn(PZDC)(DPPZ)(H(2)O)](n) (where DPPZ is dipyrido[3,2-a:2',3'-c]phenazine and H(2)PZDC is pyrazine-2,3-dicarboxylic acid), the Zn atom is six-coordinated in a slightly distorted octa-hedral coordination geometry by three N atoms from one DPPZ ligand and one PZDC(2-) dianion, three O atoms from two different PZDC(2-) ligands and one water mol-ecule. Each PZDC(2-) dianion serves as a spacer, connecting adjacent metal atoms into a polymeric chain structure parallel to the b axis. The chain motif is consolidated into a three-dimensional supra-molecular network by O-H⋯O and O-H⋯N hydrogen bonds and π-π aromatic stacking inter-actions involving adjacent DPPZ ligands and PZDC(2-) dianions with centroid-centroid separations of 3.522 (6) and 3.732 (8) Å, respectively.

| S-EPMC2961988 | biostudies-literature

Bis(μ-dithieno[3,2-b:2',3'-d]thio-phene-2,6-dicarboxyl-ato-κO:O)bis-[bis-(1,10-phenanthroline-κN,N')cobalt(II)] dimethyl-formamide disolvate.

Project description:The asymmetric unit of the title compound, [Co(2)(C(10)H(2)O(4)S(3))(2)(C(12)H(8)N(2))(4)]·2C(3)H(7)NO, contains one half of the formula unit, with the rest generated by inversion. The cobalt ion sits in a slightly distorted octa-hedral environment and is ligated to four N atoms of two 1,10-phenanthroline molecules and to two O atoms of two dithieno[3,2-b:2',3'-d]thio-phene-2,6-dicarb-oxy-l-ate anions. The anions act as bridges between the Co(II) centers.

| S-EPMC2977552 | biostudies-literature

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

Project description: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].

| S-EPMC3007002 | biostudies-literature

Poly[bis-(μ-2,6-dimethyl-pyridinium-3,5-dicarboxyl-ato-κO:O)copper(II)].

Project description:In the title coordination polymer, [Cu(C(9)H(8)NO(4))(2)](n), the Cu atom, located on a twofold rotation axis, is four coordinate in a distorted square-planar environment. Each 2,6-dimethyl-pyridinium-3,5-dicarboxyl-ate anion bridges two Cu atoms, forming a two-dimensional coordination polymer. A three-dimensional supra-molecular network is built from N-H⋯O hydrogen bonds involving the pyridinium NH and the carboxyl COO groups.

| S-EPMC2959900 | biostudies-literature

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