Analysis of ABX spin systems in some 1,4‐dihydro‐1λ5, 4λ5‐diphosphinines: Signs of 31P13C coupling constants and isotope effects

Analysis of ABX spin systems in some 1,4‐dihydro‐1λ5, 4λ5‐diphosphinines: Signs of 31P13C coupling constants and isotope effects
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一些 1,4-二氢-1λ5、4λ5-二膦中的 ABX 自旋系统分析:31P13C 耦合常数和同位素效应的迹象

DOI:
10.1002/mrc.1260330710
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发表时间:
1995
影响因子:
2
通讯作者:
E. Fluck
E. Fluck
中科院分区:
化学3区
文献类型:
--
作者:
G. Heckmann;E. Fluck

文献摘要

被引文献

相似文献

分析了一些对称的1,4-二氢-1,4-二苯基-1 λ 5,4 λ5-二膦的[mono-13 C]同位素异构体的ABX自旋系统。本文报道了两个~(31)P核和两个乙烯基~(13)C原子之间的~ 2 J(PC)的绝对符号和大小以及~ 4J(PC)和~ 3 J(PP)的绝对符号和大小与取代基的关系。讨论了~(13)C同位素对δ(~(31)P)和~ 3 J(PP)的影响。
The ABX spin systems of the [mono‐13C]isotopomers with vinylic and phenyl ipso‐13C atoms of a number of symmetrical 1,4‐dihydro‐1,4‐diphenyl‐1λ5,4λ5‐diphosphinines were analysed. The substituent dependence of the absolute signs and magnitudes of 2J(PC) between the two 31P nuclei and two vinylic 13C atoms and of the 4J(PC) and 3J(PP) are reported. 13C isotope effects on δ(31P) and 3J(PP) are discussed.