Crystal and molecular structures of the sulfurization and selenation products of bis[bis(trimethylsilyl)amino]germanium(II). Crystal structure of (triphenylphosphine)gold(I) bis(trimethylsilyl)amide

Treatment of bis[bis(trimethylsilyl)amino]germanium(II) with elemental sulfur or selenium affords high yields of the corresponding monosulfide [(Me3Si)(2)N](2)GeS and selenide [(Me3Si)(2)N](2)GeSe, respectively. The crystalline products have now been shown to be cyclic dimers with (GeS/Se)(2) four-membered rings by X-ray single crystal structure analysis. The crystal structure of (triphenylphosphine)gold(I) bis(trimethylsilyl)amide (Ph3P)Au-N(SiMe3)(2) has also been determined. The molecule is a monomer with a tricoordinate nitrogen atom in a planar configuration [Si2NAu]. The compound does not undergo insertion of the bis [bis(trimethylsilyl)amino] germylene.