Oxidationsreaktionen von Phosphanen mit Schwefeldioxid/Oxidation Reactions of Phosphanes with Sulfur Dioxide

Abstract

Abstract Sulfur dioxide can be used as an oxidizer in the reaction of Zn(SO2)n(AsF6)2 and tetraphenyldiphosphane. The resulting product is the tetraphenyldiphosphane dioxide complex of composition Zn[O2P2(C6H5)4]3(AsF6)2 (1)-The same compound is formed by the direct reaction of the zinc salt with O2P2(C6H5)4.When Zn(S02)n(AsF6)2 is treated with P[O = P(OC2H5)2]3 in liquid SO2, Zn{P[O = P(OC2H5)2]3}2(AsF6)2 (2) is formed. The structure of 2 was investigated by means of an X-ray single crystal analysis. 2 crystallizes in space group P3̄1 c with a = b= 11.967(3) and c = 21.202(4) Å. P[O = P(OC2H5)2]3 and (CO)4W(CH3CN)2 react to form (CO)4WP[O = P(OC2H5)2]3CH3CN.Only one acetonitrile molecule is replaced by the phosphane.