On an accidental degeneracy in the 31P{1H} NMR chemical shifts in ruthenium diphosphine complexes

被引：13
|
作者：
Agostini Valle, Eliana Maira [1 ]
do Nascimento, Fabio Batista [1 ]
Ferreira, Antonio Gilberto [1 ]
Batista, Alzir A. [1 ]
Rodrigues Monteiro, Marcos Claudio [2 ]
Machado, Sergio de Paula [2 ]
Ellena, Javier [3 ]
Castellano, Eduardo E. [3 ]
de Azevedo, Eduardo Ribeiro [3 ]
机构：
[1] Univ Fed Sao Carlos, Dept Quim, CP 676, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Fed Rio de Janeiro, Inst Quim, Dept Quim Inorgan, BR-21945970 Rio De Janeiro, Brazil
[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
来源：
QUIMICA NOVA | 2008年 / 31卷 / 04期
关键词：
ruthenium; diphosphine; NMR;
D O I：
10.1590/S0100-40422008000400019
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The [RuCl(bipy)(dppb)(4-pic)]PF6 complex was prepared and fully characterized. The X-ray crystal structure of this complex was determined in order to make an unambiguous distinction between the two possible positions of the 4-methylpyridine ligand (4-pic) in the compound: trans to phosphorus atom or trans to nitrogen atom. The [RuCl(bipy)(dppb)(4-pic)]PF6 complex exhibits an unusual temperature-dependent accidental degeneracy of the P-31 chemical shifts in its solution NMR spectrum.
引用
收藏
页码：807 / 812
页数：6
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