The synthesis and characterisation of hetero-bimetallic sulfonate bridged coordination polymers of the type MIISnIV(SO3X)6 with X = F or CF3

Abstract

The synthesis of a series of hetero-bimetallic fluorosulfate bridged coordination polymers of the type M(II)Sn(SO3F)6, with M(II) = Mn, Fe, Co, Ni, or Cu, by interaction of the metal bisfluorosulfate with the strong fluorosulfate acceptor Sn(SO3F)4 in fluorosulfuric acid is described. Subsequent solvolysis of either stoichiometric 1:1 mixtures of M(SO3F)2 and Sn(SO3F)4or the bimetallic polymer M(II)Sn(IV)(SO3F)6 in an excess of trifluoromethyl sulfuric acid affords the corresponding SO3CF3-bridged polymers of the composition M(II)Sn(SO3CF3)6 with M(II) = Mn, Fe, Co, Ni, or Cu. The new compounds are characterized by infrared and 119Sn Mössbauer spectroscopy.