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Poly[[[diaqua-sodium]-μ(3)-5-carb-oxy-2-ethyl-1H-imidazole-4-carboxyl-ato-κN,O:O:O] monohydrate].

ABSTRACT: In the title complex, {[Na(C(7)H(7)N(2)O(4))(H(2)O)(2)]·H(2)O}(n), the Na(I) atom exhibits a distorted octa-hedral geometry and is six-coordinated in an NO(5) environment. The equatorial plane is defined by three O atoms and one N atom from two distinct 5-carb-oxy-2-ethyl-1H-imidazole-4-carboxyl-ate (H(2)EIDC) ligands and one coordinated water mol-ecule, and the apical sites are occupied by one carboxyl O atom from one H(2)EIDC ligand and one O atom from the other coordinated water mol-ecule. The Na(I) atoms are linked by H(2)EIDC ligands, generating an infinite double chain along the a axis. These chains are further connected via O-H⋯O and N-H⋯O hydrogen bonds into a three-dimensional supra-molecular network.

SUBMITTER: Li SJ

PROVIDER: S-EPMC3051994 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Diaqua-bis-(4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ato-κN,O)cadmium dihydrate.

Project description:The asymmetric unit of the title compound, [Cd(C(7)H(7)N(2)O(4))(2)(H(2)O)(2)]·2H(2)O, consists of one Cd(II) ion, one 4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ate anion, one coordinated water mol-ecule and one lattice water mol-ecule. The Cd(II) ion lies on a twofold axis, and is hexa-coordinated by four O atoms from water mol-ecules and carboxyl-ate groups and two N atoms from two imidazole rings, in a distorted octa-hedral arrangement. An extensive framework of N-H⋯O and O-H⋯O hydrogen bonds with the participation of coordinated and free water mol-ecules is found in the crystal structure, which contributes to the formation of a three-dimensional structure.

| S-EPMC3151988 | biostudies-literature

Poly[diaqua-bis(μ(2)-5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-κN,O:O)lead(II)].

Project description:In the title complex, [Pb(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)](n), the eight-coordinate Pb(II) atom lies on a twofold rotation axis and adopts a slightly distorted square-anti-prismatic N(2)O(6) coordination geometry. The ligand donor atoms are the tertiary N atoms of the imidazole rings and the carboxyl-ate O atoms of two chelating 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate ligands, the carb-oxy O atoms of two additional imidazole ligands and two water O atoms. The carb-oxy O and the N,O-chelate systems also link adjacent Pb(II) atoms, forming a two-dimensional layer structure, with four individual Pb(II) atoms located at the corners of a square. These layers are further inter-connected by an extensive array of O-H⋯O and N-H⋯O hydrogen bonds into a three-dimensional network.

| S-EPMC2979092 | biostudies-literature

Diaqua-bis-(1H-imidazole-4-carboxyl-ato-κN,O)zinc.

Project description:In the title compound, [Zn(C(4)H(3)N(2)O(2))(2)(H(2)O)(2)], the Zn(II) ion is situated on a twofold rotation axis and exhibits a distorted octa-hedral coordination configuration. The equatorial plane contains two cis-oriented bidentate 1H-imidazole-4-carboxyl-ate ligands and the axial positions are occupied by two coordinated water mol-ecules. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional supra-molecular network. There are π-π inter-actions between the imidazole rings, with a centroid-to-centroid distance of 3.504 (3) Å.

| S-EPMC3151991 | biostudies-literature

Diaqua-bis-(4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ato-κN,O)manganese(II) N,N-dimethyl-formamide disolvate.

Project description:In the title compound, [Mn(C(7)H(7)N(2)O(4))(2)(H(2)O)(2)]·2C(3)H(7)NO, the central Mn(II) ion, located on an inversion center, is hexa-coordinated by four O atoms from two water mol-ecules and two carboxyl-ate groups, and two N atoms from two 4-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ate anions in a slightly distorted octa-hedral environment. The complex mol-ecules and solvent mol-ecules are connected via N-H⋯O and O-H⋯O hydrogen bonds into a two-dimensional polymeric structure parallel to (001).

| S-EPMC3151971 | biostudies-literature

Diaqua-bis-(5-carb-oxy-2-ethyl-1H-imidazole-5-carboxyl-ato-?N,O)zinc trihydrate.

Project description:In the crystal structure of the title compound, [Zn(C(7)H(7)N(2)O(4))(2)(H(2)O)(2)]·3H(2)O, the Zn(II) ion, located an inversion center, is N,O-chelated by two 5-carb-oxy-2-ethyl-1H-imidazole-4-carboxyl-ate anions and further coordinated by two water mol-ecules in a distorted octa-hedral geometry. The carb-oxy group links with the carboxyl-ate group of the same ligand via an intra-molecular O-H?O hydrogen bond. An extensive inter-molecular N-H?O and O-H?O hydrogen-bonded network exists in the crystal structure. One disordered lattice water mol-ecule is half-occupied and is located close to an inversion center.

| S-EPMC3120609 | biostudies-literature

Diaqua-bis-(5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-κN,O)cadmium(II) 3.5-hydrate.

Project description:In the title complex, [Cd(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Cd(II) is coordinated by two water mol-ecules and N,O-chelated by two 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate anions in a distorted octa-hedral geometry. The two imidazole rings are oriented to each other with a dihedral angle of 75.1 (2)°. Strong O-H⋯O hydrogen bonds between protonated and deprotonated carboxyl-ate groups occur in the mol-ecular structure. In the crystal structure extensive O-H⋯O and N-H⋯O hydrogen bonds help to stabilize the three-dimensional supra-molecular framework. The propyl groups of anions are disordered over two sites with refined occupancies of 0.768 (6):0.232 (6) and 0.642 (8):0.358 (8).

| S-EPMC3007830 | biostudies-literature

Diaqua-bis-(5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-κN,O)manganese(II) 3.5-hydrate.

Project description:In the title complex, [Mn(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Mn(II) cation is six-coordinated by two N,O-bidentate H(2)pimda(-) ligands (H(2)pimda(-) = 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate) and two water mol-ecules in a distorted octa-hedral environment. The complete solid-state structure can be described as a three-dimensional supra-molecular framework stabilized by a wide range of O-H⋯O and N-H⋯O hydrogen bonds. The propyl groups of H(2)pimda(-) are disordered over two sets of sites with refined occupancies of 0.759 (5):0.241 (5) and 0.545 (7):0.455 (7).

| S-EPMC3007852 | biostudies-literature

Diaqua-bis-(5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-κN,O)zinc(II) 3.5-hydrate.

Project description:In the title complex, [Zn(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Zn(II) ion is coordinated by two N,O-bidentate H(2)pimda ligands (H(3)pimda = 2-propyl-1H-imidazole-4,5-dicarb-oxy-lic acid) and two water mol-ecules in a distorted octa-hedral environment. In the crystal structure, extensive inter-molecular O-H⋯O and N-H⋯O hydrogen bonds stabilize the three-dimensional supra-molecular network. Intra-molecular O-H⋯O hydrogen bonds between the carboxyl groups are also observed. The propyl groups of the two H(2)pimda ligands are disordered each over two sites, with occupancy factors of 0.752 (5):0.248 (5) and 0.519 (7):0.481 (7). One of the water mol-ecules is half-occupied.

| S-EPMC3008058 | biostudies-literature

Diaqua-bis(5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-κN,O)magnesium(II) 3.5-hydrate.

Project description:In the title complex, [Mg(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·3.5H(2)O, the Mg(II) atom is six-coordinated by two N,O-bidentate 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate ligands and two water mol-ecules, forming a distorted octa-hedral environment. The complex mol-ecules are linked into a three-dimensional network by N-H⋯O and O-H⋯O hydrogen-bonding inter-actions. The propyl groups are disordered over two sites, with site occupancies of 0.755 (7):0.245 (7) and 0.556 (13):0.444 (13).

| S-EPMC2983537 | biostudies-literature

trans-Diaqua-bis-[5-carb-oxy-2-(3-pyrid-yl)-1H-imidazole-4-carboxyl-ato-κN,O]cobalt(II).

Project description:In the title complex, [Co(C(10)H(6)N(3)O(4))(2)(H(2)O)(2)], the Co(II) atom is located on an inversion centre and displays a distorted octa-hedral coordination geometry defined by two N,O-bidentate ligands in the equatorial plane and two water mol-ecules in the axial positions. The conformation is stabilized by intra-molecular O-H⋯O hydrogen bonds. Inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into chains, which are further connected by inter-molecular O-H⋯O and O-H⋯N hydrogen-bonding inter-actions, forming a two-dimensional supra-molecular network parallel to (110).

| S-EPMC3200953 | biostudies-literature

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