Abstract
The synthesis and characterization of chlorogermylenes and (diazomethyl)germylenes involving the germanium atom coordinated to a tungsten pentacarbonyl group are reported. Treatment of chlorogermylene 1 with pentacarbonyl(tetrahydrofuran) tungsten led to chlorogermylene complex 2 in good yield. A similar reaction with (diazomethyl)germylene 3 gave complex 4, which rapidly lost the trimethylsilyl moiety to generate tungsten complex 5. Otherwise, complex 5 was obtained directly by reaction of the lithium salt of trimethylsilyldiazomethane with complex 2. Complexes 2 and 5 were fully characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography. The photolysis of 5 was studied with the aim of generating a germa-alkyne complex.
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