Two saccharinate complexes:: [Mn(phen)2(sac)(H2O)]+•sac- and [Co(bipy)2(sac)(H2O)]+ •sac-

The title saccharinate complexes, aqua[1,2-benzisothiazol-3(2H)-onato 1,1-dioxide-N]bis(1,10-phenanthroline-N,N')-manganese(II) 1,2-benzisothiazol-3(2H)-onate 1,1-dioxide, [Mn(C7H4NO3S)(C12H8N2)(2)(H2O)](C7H4NO3S) and aqua-[1,2-benzisothiazol-3(2H)-onato 1,1-dioxide-N]bis(2,2'-bipyridine-N,N')cobalt(II)1,2-benzisothiazol-3(2H)-onate 1,1-dioxide, [Co(C7H4NO3S)(C10H8N2)(2)(H2O)](C7H4NO3S), have been prepared and their crystal structures determined at 150 K. The structure of the manganese complex consists of repeated alternating [Mn(phen)(2)(sac)(H2O)](+) cations and non-coordinated saccharinate anions. The water molecule, bound to manganese as part of a slightly distorted octahedral arrangement, is hydrogen bonded to an O atom of the SO2 group in the saccharinate counter-ion. In contrast, the cobalt complex has one pseudo-octahedral [Co(bipy)2(sac)((HO)-O-2)](+) cation, with the cobalt-bound water molecule hydrogen bonded to the N atom of the accompanying free saccharinate anion.