A novel chloro-bridged tetranuclear cadmium(II) cluster with pyridyl-substituted nitronyl nitroxide: structure and magnetic properties

被引：31

作者：

Lee, CJ

Wei, HH ^{[1
]}

Lee, GH

Wang, Y

机构：

[1] Tamkang Univ, Dept Chem, Tamsui 25137, Taiwan

[2] Deh Yu Coll Nursing & Management, Keelung, Taiwan

[3] Natl Taiwan Univ, Coll Sci, Instrumental Ctr, Taipei 10764, Taiwan

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2000年 / 3卷 / 12期

关键词：

cadmium compound; nitronyl nitroxide; crystal structure; magnetic properties;

D O I：

10.1016/S1387-7003(00)00178-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A tetranuclear cadmium(II) complex of 2(2-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1 H-imidazol-1-oxy 3-N-oxide (NIToPy) with CdCl2, [Cd4Cl8(NIToPy)(4)], has been structurally and magnetically characterized. The structure is based on a novel chloro-bridged tetranuclear cadmium quasi-cubane cluster, in which each cadmium atom is chelated by one NIToPy radical, and coordinated with four bridging chlorine atoms. The temperature dependence of the magnetic susceptibility measurements shows a weak ferromagnetic coupling between the radicals. An excellent simulation of the experimental data with the prism type four spins Hamiltonian H = -2J(1)(S1S2 + S2S3 + S3S4 + S1S4) - 2J(2)S(2)S(4) Obtained the parameters: J(1) = 1.12 cm(-1), J(2) = -0.20 cm(-1), and g = 2.04. (C) 2000 Elsevier Science S.A. All rights reserved.

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页码：690 / 693

页数：4

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