title: Magnetocaloric effect and slow magnetic relaxation in two only azido bridged ferromagnetic tetranuclear metal clusters.
abstract: Two M(II) tetranuclear complexes bridged only by azido, Mn4(N3)(7.3)Cl(0.7)L4 (1) and Co4(N3)8L4 (2) in which the four M(II) ions are precisely coplanar bridged only by six azido anions, were obtained by using 4,5-diazafluoren-9-one (L) as a corner ligand. Magnetic studies indicate that ferromagnetic coupling was conducted by the azido anions between M(II) ions. At low temperature, 1 exhibits a large magnetocaloric effect and 2 shows field-induced multiple magnetic relaxations.
authors: School of Chemistry and Chemical Engineering and Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin University of Technology, Tianjin 300384, China.
authors: Jiong-Peng
authors: JP
authors: Zhao
authors: Ran
authors: R
authors: Zhao
authors: Qian
authors: Q
authors: Yang
authors: Bo-Wen
authors: BW
authors: Hu
authors: Fu-Chen
authors: FC
authors: Liu
authors: Xian-He
authors: XH
authors: Bu