Organometallics p. 4305 - 4311 (2003)
Update date:2022-08-05
Topics:
Leung, Wing-Por
So, Cheuk-Wai
Wang, Zhong-Xia
Wang, Jin-Zhi
Mak, Thomas C.W.
The lithium complex [HC(PPh2=NSiMe3)2Li(THF)] (2) prepared by the reaction of BunLi with bis(iminophosphorano)methane reacts with GeCl2·dioxane in different stoichiometric ratios to afford [HC(PPh2=NSiMe3)2GeCl] (3) and [(Me3SiN=PPh2)2C=Ge→Ge=C (PPh2=NSiMe3)2] (4), respectively. Bisgermavinylidene 4 can also be obtained by the reaction of 3 with [Ge{N(SiMe3)2}2] or 2. Further reaction of 4 with Me3NO afforded [(μ-N=Ph2P)(Me3-SiN=Ph2P) C=Ge(OSiMe3)]2 (5), and direct reaction of elemental chalcogens (sulfur, selenium, and tellurium) with 4 afforded [(Me3SiN=PPh2)2C=Ge(μ-E)]2 [E = S (6), Se (7), and Te (8)]. X-ray structures of compounds 2-8 have been determined.
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