Sb(III) Fluoride Complexes with DL-Valine. Crystal Structureof Molecular Complex SbF3{(CH3)2CHCH(+NH3)COO–}

Abstract

Preparative method in combination with X-ray diffraction and IR spectroscopy is used to studyreaction of Sb(III) fluoride with α-aminoisovaleric acid (DL-valine) in an aqueous solution in the range of themolar ratios of components (0.25–2) : 1 in the presence of hydrofluoric acid. The molecular complex of Sb(III)fluoride with valine (1 : 1) of the composition SbF3{(CH3)2CHCH(+NH3)COO–} (I) and valinium tetrafluoro-antimonate(III) monohydrate {(CH3)2CHCH(+NH3)COOH}SbF4 · H2O (II) are synthesized for the first time.Crystal structure was determined for the molecular complex I consisting of SbF3 groups and valine moleculesunited into polymer chains through bidentate bridging carboxylate groups of amino acid molecules.