Triphenylstibine Dihydroxide

Triphenylstibine dihydroxide [alternative name: dihydroxytriphenylantimony(V)], [Sb(OH)₂(C₆H₅)₃], was synthesized by the oxidative hydrolysis of Et₄N⁺[PhSbCl₂Br]^- in methanol. The dihydroxide was characterized by IR spectroscopy, mass spectrometry and X-ray diffraction. The molecule is monomeric with very slightly distorted trigonal bipyramidal geometry around Sb with two OH groups in axial positions [Sb-O 1.963 (6) and 2.079 (7), Sb-C 2.090 (13)-2.109 (19) Å, O-Sb-O 178.5 (5)°]

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