Reaction of [HC(CMeNAr)
2]GeCl (Ar = 2,6-
iPr
2C
6H
3) with RLi (R = Me,
nBu) in diethylether at -78
C yielded the alkylgermanium(II) compounds [HC(CMeNAr)
2]GeR (R = Me(
5),
nBu (
6)), which are monomeric with a three-coordinate germanium center. Compound
5 was oxidized with sulfur and selenium to afford [HC(CMeNAr)
2]GeMe(E) (E = S (
7), Se(
8)), in which a terminal Ge=E double bond is present. Treatment of
5 with trimethylsilylazide in hexane at room temperature gave [HC(C(CH
2)NAr)CMeNAr]GeMe(N(H)SiMe
3) (
9),containing a Ge-N single bond; the expected compound [HC(CMeNAr)
2]GeMe(NSiMe
3) witha Ge=N double bond was not observed. The latter reaction proceeds with migration of ahydrogen atom from a methyl group of the ligand backbone to the nitrogen atom bonded tothe silicon atom with formation of a methylene moiety. X-ray structural data are providedfor
5,
6,
8, and
9.