Diaqua-bis(ethyl-enediamine-κN,N')Copper(II) 2,2'-Dithio-dinicotinate Sesquihydrate

Abstract

In the title compound, [Cu(C<inf>2</inf>H<inf>8</inf>N<inf>2</inf>) <inf>2</inf>](C<inf>12</inf>H<inf>6</inf>N<inf>2</inf>O<inf>4</inf>S <inf>2</inf>)·1.5H<inf>2</inf>O, there are two half-molecules of the cationic complex in the asymmetric unit. The Cu2+ ions lie on inversion centres and are octa-hedrally coordinated by two ethyl-enediamine (en) and two aqua ligands in a typical Jahn-Teller distorted environment with the water O atoms in the axial positions. Two 2-mercaptonicotinate units (mnic) are linked by a disulfide bridge. All the ethyl-enediamine N - H and O - H groups form inter-molecular hydrogen bonds with acceptor O and N atoms, giving rise to a three-dimensional network. One of the uncoordinated water molecules has a site occupation factor of 0.5.