Sb(III)Fluoride Complexes with DL-Valine.Crystal Structure of Molecular Complex SbF_3{(CH_3)_2CHCH(~+NH_3)COO~-}

摘要

Preparative method in combination with X-ray diffraction and IR spectroscopy is used to study reaction of Sb(III)fluoride with alpha-aminoisovaleric acid(DL-valine)in an aqueous solution in the range of the molar 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 SbF_3{(CH_3)_2CHCH(~+NH_3)COO~-}(I)and valinium tetrafluoro-antimonate(III)monohydrate {(CH_3)_2CHCH(~+NH_3)COOH)SbF_4 centre dot H_2O(II)are synthesized for the first time.Crystal structure was determined for the molecular complex I consisting of SbF_3 groups and valine molecules united into polymer chains through bidentate bridging carboxylate groups of amino acid molecules.