Spin canting in Re(IV) complexes: magnetic properties of [ReX4(bpym)] ( X = Cl and Br; bpym=2,2'-bipyrimidine)

被引：21
|
作者：
Martinez-Lillo, Jose [1 ]
Lloret, Francisco [1 ]
Julve, Miguel [1 ]
Faus, Juan [1 ]
机构：
[1] Univ Valencia, Dept Quim Inorgan ICMOL, Valencia, Spain
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2009年 / 62卷 / 01期
关键词：
Re(IV) complexes; Magnetic properties; Spin canting; CRYSTAL-STRUCTURE; SALTS; METAMAGNETISM; RHENIUM; CATIONS; SERIES; LIGAND;
D O I：
10.1080/00958970802474789
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The mononuclear complexes [ReCl4(bpym)] (1) and [ReBr4(bpym)] (2) (bpym = 2,2'-bipyrimidine) are weak ferromagnets. Magnetic ordering occurs below 7.0 (1) and 20.0 K (2) and good hysteresis loops are observed for the two compounds at 2.0 K. A spin-canting phenomenon, i.e., a non-strict linearity of the individual spins aligned in an anti-parallel way by intermolecular antiferromagnetic coupling occurring in many Re(IV) complexes, accounts for these magnetic features which are unusual in molecular solids such as 1 and 2.
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页码：92 / 99
页数：8
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