%0 Journal Article
%T Tris(oxamide dioxime-¦Ê2N,N¡ä)nickel(II) sulfate pentahydrate
%A Michel M. Belombe
%A Justin Nenwa
%A Yves A. Mbiangue
%A Boniface P. T. Fokwa
%J Acta Crystallographica Section E
%D 2008
%I International Union of Crystallography
%R 10.1107/s1600536808033278
%X The asymmetric unit of the title compound, [Ni(C2H6N4O2)3]SO4¡¤5H2O, contains two complex cations, two sulfate anions and ten lattice water molecules. In both independent cations, the central NiII ion adopts a distorted octahedral coordination involving six imino N atoms of three bidentate oxamide dioxime ligands. The bulk structure is achieved by a three-dimensional network of O¡ªH...O and N¡ªH...O hydrogen bonds which interlink the ionic partners and some water molecules in such a manner that the lattice framework thus formed defines channels parallel to [100]. The other water molecules are lodged inside these channels. Two of the ten water molecules in the asymmetric unit are disordered over three sites, in 0.356 (3):0.324 (5):0.320 (5) and 0.247 (3):0.293 (6):0.460 (6) occupancy ratios, and one O atom of a sulfate ion is also disordered over two sites, with occupancies of 0.621 (5) and 0.379 (5).
%U http://scripts.iucr.org/cgi-bin/paper?S1600536808033278