catena-Poly[[diaqua(1,10-phen-anthroline-N,N ')manganese(II)]-mu-(thiosulfato-O : S)] and bis(2,2 '-bipyridyl-N,N ')(tetrathionato-O,O ')manganese(II)

The structures of [Mn(S2O3)(2)(C12H8N2)(H2O)(2)] and [Mn(S4O6)(C10H8N2)(2)] are presented. The former consists of pairs of polymeric chains formed by manganese polyhedra bridged by bidentate thiosulfate anions, which are in t urn related to each other by a pseudo-twofold screw axis. The latter has cr ystallographic twofold symmetry and consists of monomers in which manganese displays its typical octahedral coordination provided by the bidentate bit es of two bipyridine bases and a tetrathionate anion, which is, to our know ledge, the first chelating tetrathionate to be reported in the literature.