4,5-二氧-2-硫-1,3,2,4-二氮二磷杂环戊烷衍生物的31P NMR谱

波谱学杂志 ›› 1989, Vol. 6 ›› Issue (2): 221-224.

4,5-二氧-2-硫-1,3,2,4-二氮二磷杂环戊烷衍生物的³¹P NMR谱

李国炜, 程磊峰, 陈茹玉

南开大学元素有机化学研究所天津

收稿日期:1988-02-19 修回日期:1988-06-20 出版日期:1989-06-05 发布日期:2018-01-22

THE ³¹P NMR SPECTRA OF 4,5-DIOXO-2-THIO-1,3,2,4-DIAZADIPHOSPHOLANE DERIVATIVES

Li Guowei, Cheng Leifeng, Chen Ruyu

The Research Institute of Elemento-organic Chemistry, Nankat University, Tianjing

Received:1988-02-19 Revised:1988-06-20 Online:1989-06-05 Published:2018-01-22

摘要/Abstract

摘要： ³¹PNMR谱表明,在4,5-二氧-2-硫-1,3,2,4-二氮二磷杂环戊烷类型化合物中,存在着顺式和反式两种异构体.顺式异构体化学位移出现在高场,²J_pp偶全合常数较大;而反式异构体化学位移在低场,²J_pp偶合常数较小.用Van der Waals排斥力和Pπ-dπ反馈理论解释了以上现象,并讨论了其他取代基R、X对³¹P-NMR化学位移的影响.

关键词: 双磷杂环戊烷, ³¹P-NMR

Abstract: It was found from the ³¹P NMR spectra that there were cis-and trans isomers in 4,5-dioxO^-2-thiO^-1,3,2,4-diazadiphospholanes. The chemical shifts of the cis-isomer appeared at highfield with larger ²J_PP coupling constant and the trans-isomer at lowficld with smaller coupling constant. It was explained in terms of van der Waals action and conjugated(P→d) π system. The relationship between the ³¹P NMR chemical shifts and substituent in phenyl is also discussed.

Key words: Diphospholane, ³¹P-NMR

李国炜, 程磊峰, 陈茹玉. 4,5-二氧-2-硫-1,3,2,4-二氮二磷杂环戊烷衍生物的³¹P NMR谱[J]. 波谱学杂志, 1989, 6(2): 221-224.

Li Guowei, Cheng Leifeng, Chen Ruyu. THE ³¹P NMR SPECTRA OF 4,5-DIOXO-2-THIO-1,3,2,4-DIAZADIPHOSPHOLANE DERIVATIVES[J]. Chinese Journal of Magnetic Resonance, 1989, 6(2): 221-224.

4,5-二氧-2-硫-1,3,2,4-二氮二磷杂环戊烷衍生物的³¹P NMR谱

THE ³¹P NMR SPECTRA OF 4,5-DIOXO-2-THIO-1,3,2,4-DIAZADIPHOSPHOLANE DERIVATIVES

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