Synthesis, X-ray crystal structure and solution NMR spectroscopic studies of [Li{N(H)C(Me)=C(H)(CN)}(py)(2)](2) (py=NC5H5)

Synthesis, X-ray crystal structure and solution NMR spectroscopic studies of [Li{N(H)C(Me)=C(H)(CN)}(py)(2)](2) (py=NC5H5)
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DOI:
10.1039/cc9960002433
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发表时间:
1996-11-07
影响因子:
4.9
通讯作者:
Lappert, MF
Lappert, MF
中科院分区:
化学2区
文献类型:
--
作者:
Avent, AG;Frankland, AD;Lappert, MF

文献摘要

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由Li[N(SiMe(3))Bu(t)]和过量的MeCN得到的ω-氰基-烯酰胺锂化合物[Li{N(H)C(Me)=(H)CN}](n)产生结晶双核配合物[Li{N(H)C(Me)=C(H)CN)}(py)(2)](2)2a,其含有具有四配位锂和Me和H关于C=C键的顺式排列的12元大环;在[H-2(5)]吡啶溶液中,化合物2a是一个流动的,它涉及一个反式异构体2b。
The omega-cyano-eneamidolithium compound [Li{N(H)C(Me)=(H)CN}](n) obtained from Li[N(SiMe(3))Bu(t)] and an excess of MeCN, yields the crystalline dinuclear complex [Li{N(H)C(Me]=C(H)CN)}(py)(2)](2) 2a, containing a 12-membered macrocycle having four-coordinate lithium and a cis-arrangement of Me and H about the C=C bond; in [H-2(5)]pyridine solution compound 2a is fluxional, a transisomer 2b being implicated.