Reaktionen von Germylenen mit Säureaziden / Reactions of Germylenes with Acid Azides

A, B Starting materials are the sterically hindered diazagermylenes and C o f the general formula [R (Me 3 Si)N] 2 Ge (R = o-disubstituted aryl or mesityl). A and B react with arylsulfonylazides to give the polymeric N ,N -bis(amino)-N '-sulfonylgermazane derivatives 1 and 2. With phenylazidoformiate, A, B and C yield the corresponding diamino(phenoxy)(isocyanato)- germanium (IV ) derivatives 3 -5, while with N ,N -dimethylcarbamoylazide the impure diamino(dimethylamino)(isocyanato)germanium (IV ) com pound 6 is formed. Reactions of A and B with O ,O -diphenyl-phosphorylazide afford the eight-membered (GeNPO) 2 ring compounds 7 and 8 . The substances are characterized by C, H , N analyses, 1 - 8 by their mass spectra, and 3 - 8 by NMR ( 1 H, l3 C, 29 Si, 31 P). Characteristic IR group frequencies are given for the isocyanato compounds 3 - 6 . Single crystal X -ray structure analyses are reported for C, 4, 5 and 8 .