Diaqua-bis-(5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ato-?N,O)nickel(II) tetra-hydrate.

ABSTRACT: In the title complex, [Ni(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)]·4H(2)O, the Ni(II) ion is coordinated in a slightly distorted octa-hedral environment formed by two bis-chelating H(2)pimda (H(3)pimda is 2-propyl-1H-4,5-dicarb-oxy-lic acid) ligands and two coordinated water mol-ecules. In the crystal structure, a three-dimensional framework is formed by inter-molecular O-H?O and N-H?O hydrogen bonds involving the solvent water mol-ecules, coordinated water mol-ecules, carboxyl-ate O atoms and the protonated N atoms of the H(2)pimda ligands. The propyl groups of each H(2)pimda ligand are disordered over two sets of sites with refined occupancies of 0.50?(2):0.50?(2) and 0.762?(11):0.238?(11). In one water solvent mol-ecule, one of the H atoms was refined as disordered over two sites of equal occupancy.

SUBMITTER: Fan RZ 

PROVIDER: S-EPMC3007488 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature