Date Published: April 01, 2012
Publisher: International Union of Crystallography
Author(s): Julia A. Rusanova.
The ionic NiII title complex, [Ni(C3H10N2)2(H2O)2][Ni(SO4)2(C3H10N2)2], is built up of [Ni(dipr)2(H2O)2]2+ complex cations and [Ni(dipr)2(SO4)2]2− complex anions (dipr is propane-1,3-diamine). Both NiII atoms display a slightly distorted octahedral coordination and are located on inversion centers. There are several types of hydrogen-bonding interactions, which connect complex cations and anions into a two-dimensional network parallel to (010). Hydrogen bonds formed by the axially coordinated water molecule of the complex cation and one of the O atoms of the sulfate groups of the complex anion (first type) link them into chains along the c axis. These chains are linked to each other through hydrogen bonds formed by an O atom (second type) of the SO4 groups and NH2 groups of the ligand of the complex cations from neighboring chains, forming a two-dimensional hydrogen-bonded net perpendicular to the b axis. The third type of O atoms of the sulfate groups of the complex anion are also linked into chains by a combination of both previously described types of H-atom connections.
For background to direct synthesis, see: Nesterov et al. (2004 ▶, 2006 ▶); Kovbasyuk et al. (1997 ▶, 1998 ▶); Vassilyeva et al. (1997 ▶). For the structures of related complexes, see: Clegg et al. (1992 ▶); Kim & Lee (2002 ▶); Fritsky et al. (2004 ▶); Nowicka et al. (2002 ▶); Stockner et al. (2007 ▶); Duesler & Raymond (1978 ▶); Jurnak & Raymond (1974 ▶); Solans et al. (1982 ▶).