A novel chloro-bridged tetranuclear cadmium(II) cluster with pyridyl-substituted nitronyl nitroxide: structure and magnetic properties
Resource
Inorganic Chemistry Communications 3 (12): 690-693
Journal
Inorganic Chemistry Communications
Pages
690-693
Date Issued
2000
Date
2000
Author(s)
Lee, Chin-Jhan
Wei, Ho-Hsiang
Lee, Gene-Hsiang
Wang, Yu
Abstract
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 chlorobridged 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 = -2J1(S1S2 + S2S3 + S3S4 + S1S4) -2J2S2S4 obtained the parameters: J1 = 1.12 cm-1, J2 = -0.20 cm-1, and g = 2.04. © 2000 Elsevier Science S.A.
Type
journal article
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