Disodium diaquabis(methylenediphosphonato-kappa O-2,O ')cobaltate(II) dihydrate

作者：van der Merwe Kina^*; Visser Hendrik G; Venter Johan A

来源：Acta Crystallographica Section E-Structure Reports Online, 2011, 67: M1468-U1515.

DOI：10.1107/S1600536811038530

In the title compound, Na-2[Co(CH4O6P2)(2)(H2O)(2)]center dot 2H(2)O, the asymmetric unit is composed of one methylenediphosphonate ligand and one water molecule, which both are coordinated to a Co-II atom, as well as a non-coordinated water molecule and a sodium cation. The Co-II atom occupies a special position on a crystallographic inversion centre. The slightly distorted (CoO6)-O-II octahedral coordination environment is composed of two bidentate methylenediphosphonate ligands and two coordinated water molecules in trans positions. The sodium ion is octahedrally coordinated to six O atoms with Na-O distances ranging from 2.3149 (12) to 2.6243 (12) angstrom. An extensive three-dimensional network of intermolecular as well as intramolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonding interacions is present.

• 出版日期2011-10