Bis(1,10-phenanthroline-N,N′)copper(II) tetrathionate and tris(1,10-phenanthroline-N,N′)copper(II) tetrathionate pentahydrate

Abstract

© 1998 International Union of Crystallography The structures of [Cu(C12H8N2)2(S4O 6)], (I), and [Cu(C12H8N2)3](S4O 6).5H2O, (II), are reported. Compound (I) consists of infinite polymeric chains where copper displays a typical (4+2) coordination and S4O6 connects Cu(phen)2 (phen is phenanthroline) units through rather long Cu⋯O contacts. Compound (II), instead, has a purely ionic character displaying [Cu(phen)3]2+ and S4O6 2- monomeric units. Equatorial and apical bonds in the copper coordination spheres have mean values of 2.003 (5)/2.467 (12) and 2.056 (3)/2.311 (13) Å for (I) and (II), respectively. Some short O⋯OW contacts in (II) suggest the existence of hydrogen bonding involving some of the water molecules of hydration.