The mixed-valence rhenium(IV,V) complexes

被引：0

作者：

Banas, B. ^{[1
]}

Nahorska, M. ^{[1
]}

Tomkiewicz, A. ^{[1
]}

Klak, J. ^{[1
]}

Cyfert, M. ^{[1
]}

Mrozinski, J. ^{[1
]}

机构：

[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

来源：

POLISH JOURNAL OF CHEMISTRY | 2006年 / 80卷 / 10期

关键词：

bimetallic complexes; rhenium(IV); rhenium(V); mixed-valence system;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction of K-4[Re2OCl10] with oxidizing agents in hydrochloric acid produced binuclear compounds: Cs-3[Re2OCl10] 1, (Ph4As)(3)[Re2OCl10] 2, (ChinH)(3)[Re2OCl10] 3. These complexes had been characterized by kinetic and magnetic investigations. The low-temperature magnetic susceptibility measurements have revealed, that Cs-3[Re2OCl10] complex is antiferromagnets, with Neel temperature at 10 K. The temperature dependence of the magnetic moment for 2 and 3 complexes indicates the existence of a magnetically isolated exchange-coupled dimer. In the electronic spectra, the intensive band at 20150 cm(-1) is associated with the presence of the two different oxidation states. In agreement with the evidence from the oxidation of oxochlororhenate ion and the disproportionation in solution, it is proposed that the compound should be considered as a Re(IV)-Re(V) mixed-valence system.

引用

页码：1663 / 1676

页数：14

共 48 条

[1] PREPARATION AND PROPERTIES OF [RE(AMINE)4O2]+ TYPE IONS [J].