Structural and magnetic properties of polynuclear oximate copper complexes with different topologies

被引：10
|
作者：
Martinez, Lorena [1 ]
Bazzicalupi, Carla [2 ]
Bianchi, Antonio [2 ]
Lloret, Francesc [3 ]
Gonzalez, Ricardo [1 ]
Kremer, Carlos [1 ]
Chiozzone, Raul [1 ]
机构：
[1] Univ Republica, Fac Quim, DEC, Area Quim Inorgan, Montevideo, Uruguay
[2] Univ Firenze, Dipartimento Chim, Sesto Fiorentino, Italy
[3] Univ Valencia, Fac Quim, Inst Ciencia Mol, Dept Quim Inorgan, Valencia, Spain
来源：
POLYHEDRON | 2017年 / 138卷
关键词：
Copper(II) complexes; Methyl(2-pyridyl)ketone oxime; Magnetic properties; Antisymmetric exchange; EPR spectra; SINGLE-MOLECULE MAGNETISM; 2-PYRIDYL KETONE OXIME; LIGANDS STRUCTURE; INVERSE-9-METALLACROWN-3; COMPOUNDS; TRICOPPER(II) COMPLEXES; ANTISYMMETRIC EXCHANGE; CARBOXYLATE CHEMISTRY; TRINUCLEAR; CLUSTERS; BEHAVIOR;
D O I：
10.1016/j.poly.2017.09.017
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two new copper(II) complexes containing the methyl(2-pyridyl)ketone oxime ligand (mpkoH) [Cu-3(OH)(ClO4)(2)(mpko)(3)]center dot CH3OH (1) and [Cu(ClO4)(mpko)(mpkoH)](n) (2) have been prepared from Cu(ClO4)(2) and mpkoH in different metal-to-ligand molar ratios. In addition, the compound [Cu{(mpko)(2)BF2}(H2O)](BF4) (3) [(mpko)2BF(2) is the fluoroboration product of the oxime] has been obtained when replacing Cu(ClO4)(2) by Cu(BF4)(2). Compound 1 is an isolated triangle with a {Cu-3(mu(3)-OH)}(5+) core, whereas 2 is a chain of Cu-II ions linked by anionic mpko(-) bridges. 1 exhibits strong antiferromagnetic competing interactions, as well as antisymmetric exchange. On the other hand, very weak ferromagnetic interactions are found in 2. The magnetic properties of these compounds have been analyzed by magnetic measurements and EPR spectra. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：125 / 132
页数：8
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