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

The title saccharinate complexes, aqua[1,2-benzisothiazol-3(2H)-onato 1,1-d ioxide-N]bis(1,10-phenanthroline-N,N')-manganese(II) 1,2-benzisothiazol-3(2 H)-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)(H 2O)](C7H4NO3S), have been prepared and their crystal structures determined at 150 K. The structure of the manganese complex consists of repeated alter nating [Mn(phen)(2)(sac)(H2O)](+) cations and non-coordinated saccharinate anions. The water molecule, bound to manganese as part of a slightly distor ted octahedral arrangement, is hydrogen bonded to an O atom of the SO2 grou p 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-bou nd water molecule hydrogen bonded to the N atom of the accompanying free sa ccharinate anion.