Redetermination of [Gd(NO?)?(H?O)?]·2H?O.

ABSTRACT: The crystal structure of the title compound, tetra-aqua-tris-(nitrato-?²O,O')gadolinium(III) dihydrate, was redetermined from single-crystal X-ray data. In comparison with the first determination [Ma et al. (1991 ?). Wuji Huaxue Xuebao, 7, 351-353], all H atoms could be located, accompanied with higher accuracy and precision. The Gd(III) atom shows a ten-coordination with three nitrate ligands behaving in a bidentate manner and the other positions being occupied by four water mol-ecules, forming a distorted bicapped square anti-prism. Two nitrate ions coordinate to the metal atom with similar bond lengths while the third shows a more asymmetric bonding behaviour. An intricate network of O-H?O hydrogen bonds, including the lattice water mol-ecules, stabilizes the crystal packing.

SUBMITTER: Taha ZA 

PROVIDER: S-EPMC3393141 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature