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Catena-Poly[[[triaqua-cadmium(II)]-?-2,2'-[oxalylbis(azanediyl)]diacetato-?O,O'] dihydrate].

ABSTRACT: The structure of the polymeric title complex, {[Cd(C(6)H(6)N(2)O(6))(H(2)O)(3)]·2H(2)O}(n), consists of chains running parallel to [01] in which the oxamidato ligand, deprotonated only at the carboxyl-ate groups, acts as a bridging bis-monodentate ligand. The Cd atom and the O atom of a coordinated water mol-ecule are located on a twofold axis. The coordination geometry around the Cd atom is distorted trigonal-pyramidal. In the crystal structure, neighbouring chains are linked into a three-dimensional network by inter-chain O-H?O and N-H?O hydrogen bonds.

SUBMITTER: Zhou F

PROVIDER: S-EPMC2980082 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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catena-Poly[[[triaqua-cadmium(II)]-μ-2,2'-[oxalylbis(azanediyl)]diacetato-κO,O'] dihydrate].

Zhou Fangxia F

Acta crystallographica. Section E, Structure reports online 20091209 Pt 1

The structure of the polymeric title complex, {[Cd(C(6)H(6)N(2)O(6))(H(2)O)(3)]·2H(2)O}(n), consists of chains running parallel to [01] in which the oxamidato ligand, deprotonated only at the carboxyl-ate groups, acts as a bridging bis-monodentate ligand. The Cd atom and the O atom of a coordinated water mol-ecule are located on a twofold axis. The coordination geometry around the Cd atom is distorted trigonal-pyramidal. In the crystal structure, neighbouring chains are linked into a three-dimen ...[more]

PMID: 21579934

Similar Datasets

A one-dimensional zigzag coordination polymer: catena-poly[[[triaqua-cadmium(II)]-[?-2,2'-(5-methyl-1,3-phenyl-enedi-oxy)diacetato-?O,O':O'',O''']] monohydrate].

Project description:In the title one-dimensional coordination polymer, {[Cd(C(11)H(10)O(6))(H(2)O)(3)]·H(2)O}(n), the 2,2'-(5-methyl-1,3-phenyl-enedi-oxy)diacetate dianions connect Cd(II) ions in a head-to-tail fashion to generate zigzag chains. The coordination geometry of the Cd atom is distorted penta-gonal bipyramidal. There are O-H?O hydrogen bonds between the carboxyl O atoms, the aqua ligands and the uncoordinated water mol-ecules.

| S-EPMC2960183 | biostudies-literature

catena-Poly[[[diaqua-cadmium]-?-2,2'-(1,2-phenyl-enedi-oxy)diacetato] mono-hydrate].

Project description:In the title coordination complex, {[Cd(C(10)H(8)O(6))(H(2)O)(2)]·H(2)O}(n) the Cd(II) atom is seven-coordinated in a distorted penta-gonal-bipyramidal geometry, the penta-gonal plane comprising four O-atom donors from the 2,2'-(1,2-phenyl-enedi-oxy)diacetate chelate ligand together with a bridging carboxyl-ate O-atom donor, with the axial sites occupied by two water mol-ecules. The resulting helical chains extend along the b axis and are inter-connected by extensive O-H?O hydrogen-bonding inter-actions, which also involve the water mol-ecule of solvation, giving a three-dimensional structure.

| S-EPMC3052000 | biostudies-literature

catena-Poly[[(triaqua-cadmium)-?-1,4-phenyl-enediacetato-?O,O':O'',O'''] dihydrate].

Project description:In the title compound, {[Cd(C(10)H(8)O(4))(H(2)O)(3)]·2H(2)O}(n), penta-gonal-bipyramidally coordinated Cd(II) ions on a twofold rotation axis are linked by tethering 1,4-phenyl-enediacetate (1,4-phda) ligands into [Cd(1,4-phda)(H(2)O)(3)](n) coordination polymer chains. The chain motifs are oriented parallel to the c-axis direction. Individual chains are connected into a supra-molecular network via O-H?O hydrogen bonding involving the aqua ligands.

| S-EPMC3238673 | biostudies-literature

catena-Poly[[[triaqua-(4,5-diaza-fluorene-9-one)cadmium]-μ-benzene-1,3-dicarboxyl-ato] dihydrate].

Project description:In the title compound, {[Cd(C(8)H(4)O(4))(C(11)H(6)N(2)O)(H(2)O)(3)]·2H(2)O}(n), the Cd(II) atom is seven-coordinated by two N atoms from the phenanthroline-derived 4,5-diaza-fluorene-9-one ligand, two O atoms from one bidentate benzene-1,3-dicarboxyl-ate ligand and three O atoms from the three water mol-ecules in a distorted penta-gonal-bipyramidal arrangement. Moreover, there are two dissociative water mol-ecules in each unit. Neighbouring units inter-act through π-π inter-actions [centroid-centroid distances = 3.325 (3) and 3.358 (4) Å] and O-H⋯O hydrogen-bonding, resulting in a two-dimensional network extending parallel to (001).

| S-EPMC2969955 | biostudies-literature

catena-Poly[[triaqua-cadmium(II)]-?-pyridine-2,3-dicarboxyl-ato-?N,O:O].

Project description:The title polymeric compound, [Cd(C(7)H(3)NO(4))(H(2)O)(3)](n) or [Cd(py-2,3-dc)(H(2)O)(3)](n), where py-2,3-dcH(2) is pyridine-2,3-dicarboxylic acid, was obtained by the reaction of cadmium(II) nitrate hexa-hydrate with (pipzH(2))(py-2,3-dc) as a proton-transfer compound in aqueous solution (pipz is piperazine). The mol-ecular structure shows that only the anionic fragment of the starting proton-transfer compound is present in the complex, while the (pipzH(2))(2+) dication has been lost. Each (py-2,3-dc)(2-) ligand bridges two Cd(II) atoms in two different coordination modes, i.e. one end acts as a monodentate and the other end as a bidentate ligand. The three remaining coordination sites on the metal center are occupied by water mol-ecules. The geometric arrangement of the six donor atoms around the Cd(II) atom is distorted octa-hedral. In the crystal structure, O-H?O and C-H?O hydrogen bonds play an important role in stabilizing the supra-molecular structure.

| S-EPMC2960211 | biostudies-literature

catena-Poly[[[dibromidomanganese(II)]-?-2,2'-bipyrimidine-?N,N:N,N]dihydrate].

Project description:The asymmetric unit of the title compound, {[MnBr(2)(C(8)H(6)N(4))]·2H(2)O}(n), contains one half of a repeat unit of the neutral linear coordination polymer and a solvent water mol-ecule, with the Mn(II) ion on a crystallographic twofold axis. In the polymer, inversion-related Mn(II) ions are bridged by the bis-chelating 2,2'-bipyrimidine (bpym) ligands, thereby forming a chain structure along the c-axis direction, and are six-coordinated in a distorted cis-N(4)Br(2) octa-hedral environment by four N atoms of twofold-related bpym ligands and twofold-related bromide anions. In the crystal, the complex polymers and solvent water mol-ecules are linked by inter-molecular O-H?Br and C-H?O hydrogen bonds, forming a two-dimensional layered structure extending parallel to the ac plane.

| S-EPMC3238743 | biostudies-literature

catena-Poly[[[triaqua-copper(II)]-?-2,2'-bipyridine-3,3'-dicarboxyl-ato-?N,N':O] monohydrate].

Project description:The title compound, {[Cu(C(12)H(6)N(2)O(4))(H(2)O)(3)]·H(2)O}(n), was synthesized under hydro-thermal conditions. The Cu(2+) ion is six-coordinated by three water O atoms, and two N atoms and one O atom of the 2,2'-bipyridine-3,3'-dicarboxyl-ate bridging ligand in a sligthly distorted octa-hedral environment. The 2,2-bipyridine-3,3'-dicarboxyl-ate bridges link the Cu(2+) ions into chains along the b-axis direction. These chains are further linked by O-H?O hydrogen bonds involving the water solvent mol-ecules, forming a three-dimensional framework.

| S-EPMC3238631 | biostudies-literature

catena-Poly[[[[3-(2-pyrid-yl)-1H-pyrazole]cadmium(II)]-?-oxalato] dihydrate].

Project description:In the title compound, {[Cd(C(2)O(4))(C(8)H(7)N(3))]·2H(2)O}(n), the Cd(II) ion is chelated by two O,O'-bidentate oxalate ions and an N,N'-bidentate 3-(2-pyrid-yl)-1H-pyrazole mol-ecule, thereby generating a distorted cis-CdN(2)O(4) octa-hedral geometry. Adjacent pairs of Cd ions are bridged by oxalate ions, resulting in wave-like polymeric chains propagating in [100]. The packing is consolidated by N-H-O and O-H-O hydrogen bonds.

| S-EPMC2971437 | biostudies-literature

catena-Poly[[aqua-bis-(pyridine-?N)copper(II)]-?-2,2'-(p-phenyl-enedi-oxy)diacetato-?O:O'].

Project description:In the title compound, [Cu(C(10)H(8)O(6))(C(5)H(5)N)(2)(H(2)O)](n), the Cu atom is five-coordinated by two O atoms from two carboxyl-ate groups of two different 2,2'-(p-phenyl-enedi-oxy)diacetate ligands, two N atoms from two pyridine mol-ecules and one water O atom. The geometry is square-pyramidal with the water O atom occupying the apical position. The carboxyl-ate group bridges adjacent Cu atoms, forming an infinite zigzag chain extending parallel to [001]. The chains are linked into layers by O-H?O hydrogen bonds. The Cu and water O atoms lie on special positions of site symmetry 2.

| S-EPMC2983391 | biostudies-literature

catena-Poly[[(5,5'-dimethyl- 2,2'-bipyridine-?N,N')cadmium(II)]-di-?-chlorido].

Project description:The asymmetric unit of the title compound, [CdCl(2)(C(12)H(12)N(2))](n), contains one half-mol-ecule; a twofold rotation axis passes through the Cd atom. The Cd(II) atom is six-coordinated in a distorted octa-hedral configuration by two N atoms from 2,2'-bipyridine-5,5'-dimethyl and four bridging Cl atoms. The bridging function of the chloro atoms leads to a one-dimensional chain structure. There is a ?-? contact between the pyridine rings [centroid-centroid distance = 3.9807?(9)?Å].

| S-EPMC2959444 | biostudies-literature

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