Abstract
Reaction of hydrido(hydrogermylene) complex Cp*(CO)2(H)W=Ge(H)(Tsi) (1, Tsi = C(SiMe3)3) with 1 equiv of MeIMe (MeIMe = 1,3-dimethyl-4,5-dimethylimidazol-2-ylidene) immediately afforded NHC-stabilized germylene complex Cp*(CO)2(H)WGe(H)(MeIMe)(Tsi) (2) that has a zwitterionic, W–Ge single-bonded structure. Complex 2 was thermally unstable and intramolecular proton-transfer followed by hydride-transfer to the NHC-unit occurred slowly at room temperature to give anionic germylene complex [Cp*(CO)2W=Ge(H)(Tsi)][HMeIMe] ([3][HMeIMe]) first and subsequently germylyne complex Cp*(CO)2W≡Ge(Tsi) (4) and H2MeIMe. Although [3][HMeIMe] was too unstable to be isolated, the salt of bulkier [HMeIiPr]+, [Cp*(CO)2W=Ge(H)(Tsi)][HMeIiPr] ([3][HMeIiPr]), was thermally more stable and was isolated and fully characterized.
Original language | English |
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Pages (from-to) | 89-94 |
Number of pages | 6 |
Journal | Journal of Organometallic Chemistry |
Volume | 848 |
DOIs | |
Publication status | Published - 2017 Jan 1 |
Keywords
- Germylene complex
- Germylyne complex
- Hydride transfer
- NHC-carbene
- Proton transfer
- X-ray diffraction
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry