Synthesis and structures of crystalline Li, Al and Sn(ii) 1-azaallyls and β-diketiminates derived from [Li{μ,η3-N(SiMe3)C(Ad)C(H)SiMe3}]2 (Ad = 1-adamantyl)†
Abstract
The crystalline dimeric 1-azaallyllithium complex [Li{μ,η3-N(SiMe3)C(Ad)C(H)SiMe3}]2 (1) was prepared from equivalent portions of Li[CH(SiMe3)2] and C(H)SiMe3-E}Me] (5) with [AlCl2Me]2, (ii) [Sn{η3-N(SiMe3)C(Ad)C(H)SiMe3}2] (7) with Sn[N(SiMe3)2]2, and (iii) [Li(N{C(Ad)
C(H)SiMe3-E}{Si(NN)SiMe3})(thf)2] (8) with the silylene Si[(NCH2But)2C6H4-1,2] [= Si(NN)]. By insertion into the C
N bond of the appropriate cyanoarene RCN, 1 gave the β-diketiminate [Li{μ-N(SiMe3)C(Ad)C(H)C(R)NSiMe3}]2 [R = Ph (2), C6H4Me-4 (3)], and 5 yielded [Al{κ2-N(SiMe3)C(Ad)C(H)C(Ph)NSiMe3}{κ1-N(SiMe3)C(Ad)
C(H)SiMe3-E}Me] (6). The β-diketiminate [Al{κ2-N(SiMe3)C(Ad)C(H)C(Ph)NSiMe3}Me2] (4) was prepared from 2 and [AlClMe2]2. The X-ray structures of 1 and 3–8 are presented. Multinuclear
- This article is part of the themed collection: Main group chemistry: from molecules to materials