trans-Diaquabis(2-pyridylethanol-N,O)cobalt(II) disaccharinate

The title complex, [ Co( pyet)(2)( H2O)(2)]( sac)(2) ( sac(-) is the saccharinate anion, C7H4NO3S-, and pyet is 2- pyridylethanol, C7H9NO) contains sac(-) ions and [ Co( H2O)(2)( pyet)(2)](2+) cations, in which the Co2+ ion lies on a centre of symmetry and is octahedrally coordinated by two water and two neutral pyet molecules, which act as N- and O- donor bidentate ligands forming two symmetrically- related six- membered chelate rings. The crystal packing is determined by hydrogen bonding, as well as weak sac(-) -sac(-) pi - pi- stacking interactions, resulting in a three- dimensional network.