Analysis of ABX spin systems in some 1,4‐dihydro‐1λ5, 4λ5‐diphosphinines: Signs of 31P13C coupling constants and isotope effects
Analysis of ABX spin systems in some 1,4‐dihydro‐1λ5, 4λ5‐diphosphinines: Signs of 31P13C coupling constants and isotope effects
复制标题
一些 1,4-二氢-1λ5、4λ5-二膦中的 ABX 自旋系统分析:31P13C 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
中科院分区:
文献类型:
--
作者:
G. Heckmann;E. Fluck
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.