Unusual conformational effect in alpha-aminoorganostannanes.
Unusual conformational effect in alpha-aminoorganostannanes.
复制标题
α-氨基有机锡烷的异常构象效应。
DOI：
10.1021/ol990737x
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发表时间：
1999
期刊：
影响因子：
5.2
通讯作者：
Chambournier,G
中科院分区：
文献类型：
--
作者：
Gawley,RE;Low,E;Chambournier,G
动态NMR分析构象移动的和刚性的2-三丁基甲锡烷基-N-甲基哌啶揭示了一个意想不到的构象的影响，表现在一个小的能量差异的构象，其中锡是赤道和轴向。主要原因似乎是构象的扭曲，其中C-2−Sn键与氮孤对电子倾斜。
Dynamic NMR analysis of conformationally mobile and rigid 2-tributylstannyl-N-methylpiperidines revealed an unexpected conformational effect that is manifested in a small energy difference between conformers in which the tin is equatorial and axial. The major reason appears to be a distortion of the conformer in which the C-2−Sn bond is synclinal to the nitrogen lone pair.