Aminostannanes and aminostannylenes containing a C,N-chelated ligand

作者：Padelkova Zdenka; Havlik Ales; Svec Petr; Nechaev Mikhail S; Ruzicka Ales^*

来源：Journal of Organometallic Chemistry, 2010, 695(24): 2651-2657.

DOI：10.1016/j.jorganchem.2010.08.013

• Tin(II and IV) compounds
• Bulky amino group
• C,N-Chelating ligand
• DFT calculations

Aminotin(II and IV) compounds {[(2,6-i-Pr-C6H3)(H) N]-mu-(Sn)-Cl}(2), {2-[(CH3)(2)NCH2]C6H4}(2)Sn[N(H) (2,6-i-Pr-C6H3)](2) and {2-[(CH3)(2)NCH2]C6H4}Sn[N(2,6-i-Pr-C6H3)(SiMe3)] were prepared by lithium halide elimination from tin halides and corresponding lithium complexes. [(2,6-i-Pr-C6H3)(H) N] Li (1) reacts with one half of molar equivalent of SnCl2 to give {[(2,6-i-Pr-C6H3)(H) N]-mu(Sn)-Cl}(2). The same lithium amide (1) gave with R3SnCl corresponding aminostannanes. Further reactions of these compounds with n-butyllithium gave the starting 1 and tetraorganostannanes. {2-[(CH3)(2)NCH2] C6H4}(2)SnBr2 reacts with two equivalents of 1 to {2-[(CH3)(2)NCH2]C6H4}(2)Sn[N(H)(2,6-i-Pr-C6H3)](2). The dimeric heteroleptic stannylene {[(2,6-i-Pr-C6H3)(SiMe3)N](mu(2)-Cl)Sn}(2) reacts with 2-[(CH3)(2)NCH2] C6H4Li to the monomeric {2-[(CH3)(2)NCH2]C6H4}Sn[N(2,6-i-Pr-C6H3)(SiMe3)]. The structure in the solid state and in solution and reactivity of products is also discussed. The unique decatin cluster has been isolated by hydrolysis of {[(2,6-i-Pr-C6H3)(H) N]-mu-(Sn)-Cl}(2). The structure of some compounds was also evaluated by theoretical DFT methods.

• 出版日期2010-11-15