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Journal of Structural Chemistry

2017 year, number 1

CRYSTAL STRUCTURE OF FLUOROSULFATE COMPLEX COMPOUNDS OF INDIUM(III) M2[InF3(SO4)H2O] (M = K, NH4)

R. L. Davidovich1, V. B. Logvinova1, V. V. Tkachev2, G. V. Shilov2
1Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
2Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
Keywords: индий(III), смешанные лиганды, комплекс, сульфатофторидное соединение, полимерная цепь, кристаллическая структура, indium(III), mixed-ligand, complex, fluorosulfate compound, polymer chain, crystal structure

Abstract

The crystal structures of isostructural mixed-ligand fluorosulfate complex compounds of indium(III) M2[InF3(SO4)H2O] (M = K, NH4), formed of K+ cations, NH4+ respectively, and complex [InF3(SO4)H2O]2- anions are determined. In the complex anion, the indium atom surrounded by three F atoms, the oxygen atom of the coordinated H2O molecule, and two oxygen atoms of the bridging sulfate group forms a slightly distorted octahedron (CN 6). Via alternating bridging SO4 groups, the polyhedra of In(III) atoms are arranged in polymer chains. The O-H⋯F hydrogen bonds organize the chains in a three-dimensional network. The K+ and NH4+ cations are located in the structure framework and additionally strengthen it.