Synthese und Eigenschaften von Brom(methyl)- und Iod(methyl)(organyIthio)gallanen / Synthesis and Properties of Bromo(methyl)- and Iodo(methyl)(organylthio)gallanes

Abstract

The reaction between dibromo- or diiodo(methyl)gallane and the trimethylsilyl sulphides (CH3)3SiSR (R = CH3, C2H5, n-C3H7, i-C3H7. Ph, CH2Ph) have been investigated. Halo(methyl)- (organylthio)gallanes are formed. These compounds and their chloro analogues can also be obtained by the reactions between the dihalo(methyl)gallanes and the corresponding leaddi- (thiolates) in the molar ratios 2:1, or from the halo(dimethyl)gallanes and free thiols. Some physical and chemical properties of the new compounds are given, and the tentative mechanisms of these reactions are discussed. Syntheses of methylgalliumdiiodide and dimethylgalliumhalides via trimethylgallane und galliumtrihalides or methylgalliumdihalides are described.