一些含桥羧基配体的羰基钼(Ⅰ)化合物的NMR研究

波谱学杂志 ›› 2000, Vol. 17 ›› Issue (4): 277-282.

一些含桥羧基配体的羰基钼(Ⅰ)化合物的NMR研究

吴达旭, 张旭东

中国科学院福建物质结构研究所, 结构化学国家重点实验室, 福州 350002

收稿日期:2000-04-25 修回日期:2000-06-05 出版日期:2000-08-05 发布日期:2018-01-11
作者简介:吴达旭,男,1943年出生,副研究员

NMR STUDY ON SOME CARBONYLMOLYBDENUM(Ⅰ) COMPOUNDS WITH BRIDGE CARBOXYL GROUP LIGAND

WU Daxu, ZHANG Xudong

State Key Laboratory of structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences Fuzhou 350002

Received:2000-04-25 Revised:2000-06-05 Online:2000-08-05 Published:2018-01-11

摘要/Abstract

摘要： 化合物(1)[(CO)₄Mo(SPh)₂Mo(CO)₄]同羧酸L反应得到桥羧基配体的羰基钼(Ⅰ)化合物[Bu₄N][(CO)₃Mo(SPh)₂LMo(CO₃)](L=CF₃COO,HCOO,CH₃COO,C₂H₅COO,OOCCH₂CH₂COO,Me₃COO),在室温下测定了它们的¹H,¹³C,⁹⁵MoNMR谱,由于配位基团、对称性及Mo-Mo键长等结构的变化,两者的谱线差别很大,特别是⁹⁵MoNMR更为敏感,即使是不同的羧基也会影响它的化学位移和线宽,其屏蔽和线宽的顺序是Me₃COO^-1 > C₂H₅COO^-1 > CH₃COO^-1 > HCOO^-1 > F3COO^-1。

关键词: 桥羧基配体, 羰基钼(Ⅰ)化合物, 核磁共振谱学

Abstract: Carbonylmolybdenum(Ⅰ) compounds with bridge carboxyl group ligand [(CO)₃Mo(SPh)₂LMo(CO)₃](L=CF₃COO,HCOO,CH₃COO,C₂H_-5COO,OOCCH₂CH₂COO,Me₃COO), are synthesized by the reaction of Compound [(CO)₄Mo(SPh)₂Mo(CO)₄] and carboxyl acids L the ¹H, ¹³C, ⁹⁵Mo NMR spectra of 7 carbonylmolybdenum compounds have been determined in room tempurate. The diffence between the spectra of reactant and product is obvious because of the chonge of the structral charge of the ligands, symmetrization, bond distances. Especially, the influence of carboxyl goup on chemical shifts and linewidth for ⁹⁵Mo NMR is sensitive. The shielding and widening order is Me₃COO^-1 > C₂H_-5COO^-1 > CH₃COO^-1 > HCOO^-1 > F₃COO^-1.

Key words: Bridge carboxyl group ligand, Carbonylmolybdenum (Ⅰ) compounds, NMR

吴达旭, 张旭东. 一些含桥羧基配体的羰基钼(Ⅰ)化合物的NMR研究[J]. 波谱学杂志, 2000, 17(4): 277-282.

WU Daxu, ZHANG Xudong. NMR STUDY ON SOME CARBONYLMOLYBDENUM(Ⅰ) COMPOUNDS WITH BRIDGE CARBOXYL GROUP LIGAND[J]. Chinese Journal of Magnetic Resonance, 2000, 17(4): 277-282.