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N–H cleavage vs. Werner complex formation: reactivity of cationic group 14 tetrelenes towards amines
Chemical Communications ( IF 6.164 ) Pub Date : 2020/03/16 , DOI: 10.1039/d0cc00875c
Dinh Cao Huan Do; Andrey V. Protchenko; M. Ángeles Fuentes; Jamie Hicks; Petra Vasko; Simon Aldridge

β-Diketiminate ligands featuring backbone NMe2 groups have been exploited to access a series of two-coordinate cations of the type [(N-nacnac)E]+ (E = Si, Ge, Sn), whose reactivity towards N–H bonds has been investigated. While the heavier group 14 systems react via simple adduct formation, N–H oxidative addition occurs for E = Si consistent with differences in EII/EIV redox potentials. The structurally characterized Ge/Sn adducts can be viewed as models for the corresponding (transient) Si systems [(N-nacnac)Si·(NH2R)]+ (R = H, tBu) – which are potential intermediates in the formation of [(N-nacnac)Si(H)(NHR)]+ via a proton-shuttling mechanism.
更新日期:2020-03-26

 

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