Magnetocaloric effect and slow magnetic relaxation in two only azido bridged ferromagnetic tetranuclear metal clusters
作者： Jiong-Peng Zhao , Ran Zhao , Qian Yang , Bo-Wen Hu , Fu-Chen Liu
DOI: 10.1039/C3DT51655E
关键词: Crystallography 、 Magnetic refrigeration 、 Metal clusters 、 Ferromagnetism 、 Chemistry 、 Ligand 、 Inorganic chemistry 、 Ion 、 Magnetic relaxation
摘要: Two MII tetranuclear complexes bridged only by azido, Mn4(N3)7.3Cl0.7L4 (1) and Co4(N3)8L4 (2) in which the four ions are precisely coplanar six azido anions, were obtained using 4,5-diazafluoren-9-one (L) as a corner ligand. Magnetic studies indicate that ferromagnetic coupling was conducted anions between ions. At low temperature, 1 exhibits large magnetocaloric effect 2 shows field-induced multiple magnetic relaxations.
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