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

页码：807 / 812

页数：6

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