Crystal structures of three geometrical isomers of [Ru(OAc)(2mqn)(2)NO] (OAc equals acetate, H2mqn equals 2-methyl-8-quinolinol) and their thermal isomerization reactions

被引：12

作者：

Miki, K ^{[1
]}

Tomizawa, H ^{[1
]}

Ikezawa, H ^{[1
]}

Miki, E ^{[1
]}

机构：

[1] RIKKYO UNIV,COLL SCI,DEPT CHEM,TOSHIMA KU,TOKYO 171,JAPAN

来源：

INORGANICA CHIMICA ACTA | 1997年 / 257卷 / 01期

关键词：

crystal structures; nitrosyl complexes; ruthenium(II) complexes; quinolinolato complexes; thermal isomerization;

D O I：

10.1016/S0020-1693(96)05394-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The structures of three geometrical isomers of [Ru(OAc)(2mqn)(2)NO], one trans isomer and two cis isomers (cis-1 and cis-2), were determined by X-ray diffraction. OAc in the cis-1 (1) and cis-2 isomers (2) is cis to NO and the geometries of the ligating N and O atoms in the two quinolinolato ligands are in cis(O,O) and trans(N,N) configurations for 1 and in cis(O,O) and cis(N,N) for 2, In the trans isomer (3), OAc is trans to NO and the geometry is in trans(O,O) and trans(N,N) configurations. The Ru-O(OAc) bond for 3 was shorter than those for 1 and 2, and the Ru-O(2mqn) bond trans to NO was also shorter than that cis to NO due to a trans-strengthening effect of NO. Reversible thermal isomerization between 1 and 2, and the irreversible one from 3 to 1 and 2 were observed in deaerated N,N-dimethylformamide at higher than 353 K.

引用

页码：3 / 10

页数：8

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