Germanium-hydrogen bonds reactions with

The reaction of phosphine (produced in situ from magnesium phosphide and hydrogen chloride in dioxan solution) with 1,5-diketones gives106 the phosphorina-none derivatives (104). Carbonyl compounds and heterocumulenes (e.g. CO2, CS2) insert into the germanium-phosphorus bond of germaphospholans to form derivatives of the germaphosphepin system [e.g. (105)].106>107... 

Treatment of Mo(II) , W(II) and Au(I) complexes with one equivalent of GeCl2 dioxane, in CH2CI2 at —78°C and subsequent wanning to room temperature, resulted in rapid and clean insertion of germylenes into the metal-hydrogen or metal-chlorine bond . This is a convenient route to synthesize functionalized transition-metal germanium compounds The reaction is exemphfied in equations 18 and 19. 

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