化学位移试剂用于均四嗪衍生物的13C核磁共振谱研究

波谱学杂志 ›› 1988, Vol. 5 ›› Issue (2): 185-192.

化学位移试剂用于均四嗪衍生物的¹³C核磁共振谱研究

彭勤纪¹, 孙喜成², 任国度²

1. 大连工学院分析中心;
2. 大连工学院精细化工系

收稿日期:1987-05-22 修回日期:1987-07-11 出版日期:1988-06-05 发布日期:2018-01-22

CARBON-13 NMR INVESTIGATION OF S-TETRAZINE DERIVATIVES BY USING CHEMICAL SHIFT REAGENTS

Peng Qinji¹, Sun Xicheng², Ren Guodu²

1. Analytical Centre, Dalian Institute of Technology;
2. Fine Chemical Engineering Dept, Dalian Institute of Technology

Received:1987-05-22 Revised:1987-07-11 Online:1988-06-05 Published:2018-01-22

摘要/Abstract

摘要： 本文用位移试剂Pr(fod)₃和Eu(fod)₃研究了均四嗪衍生物的¹³C-NMR波谱。它们之间的配位能力与均四嗪环上的电子云密度有关。通过诱导位移值,确定环上两个碳原子的化学位移值在163-171PPm范围内。探讨了诱导位移的机制,对Pr(fod)₃,以伪接触机制为主,而对Eu(fod)₃,接触机制有重要贡献。

关键词: 均四嗪, 接触机制, 伪接触机制

Abstract: The ¹³C NMR spectra of the S-tetrazine derivatives were investigated by using chemical shift reagents (CSR), Pr(fod)₃ and Eu(fod)₃. The capability of complexation between the S-tetrazine and the CSR was related to the density of electrons on the ring. The chemical shift values of 163-171ppm were determined by induced chemical shifts (US). The mechanism of the induced shifts is discussed. Pseudo-contact effect is predominant for Pr(fod)₃ but contact effect makes an important contribution to the US for Eu(fod)₃.

Key words: S-tetrazine, contact mechanism, Pseudo-contact mechanism

彭勤纪, 孙喜成, 任国度. 化学位移试剂用于均四嗪衍生物的¹³C核磁共振谱研究[J]. 波谱学杂志, 1988, 5(2): 185-192.

Peng Qinji, Sun Xicheng, Ren Guodu. CARBON-13 NMR INVESTIGATION OF S-TETRAZINE DERIVATIVES BY USING CHEMICAL SHIFT REAGENTS[J]. Chinese Journal of Magnetic Resonance, 1988, 5(2): 185-192.

化学位移试剂用于均四嗪衍生物的¹³C核磁共振谱研究

CARBON-13 NMR INVESTIGATION OF S-TETRAZINE DERIVATIVES BY USING CHEMICAL SHIFT REAGENTS

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