title: Modulation of the relaxation dynamics of linear-shaped tetranuclear rare-earth clusters through utilizing different solvents.
abstract: Nine new tetranuclear centrosymmetric linear complexes, [RE4(dbm)8L2(DMF)2]·nCH2Cl2·mC2H3N (RE = Y (1), Tb (2), Dy (3), Ho (4), Er (5), Lu (6)) and [RE4(dbm)8L2(C2H5OH)2]·nCH3CN (RE = Tb (7), Dy (8), Ho (9)) (HL = 2-[(2-(hydroxyimino)propanehydrazide)methyl]-8-hydroxyquinoline and dbm = 1,3-diphenyl-1,3-propanedione) have been synthesized. Complexes 1-9 are tetranuclear complexes. Magnetic studies reveal that both DyIII-based complexes (3 and 8) exhibit single-molecule magnet (SMM) behavior under a zero dc field. Furthermore, complex 3 presents one relaxation process under a zero dc field, while application of an external dc field (1500 Oe) induces multi-relaxation signals of the ac magnetic susceptibility.
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Ru-Xia
authors.initials: RX
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Yi-Xin
authors.initials: YX
authors.lastname: Chang
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Hai-Yun
authors.initials: HY
authors.lastname: Shen
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Wen-Min
authors.initials: WM
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Xiao-Pu
authors.initials: XP
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Ni-Ni
authors.initials: NN
authors.lastname: Wang
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Jian-Zhong
authors.initials: JZ
authors.lastname: Cui
authors.affiliation: Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China. cuijianzhong@tju.edu.cn ghl@tju.edu.cn.
authors.forename: Hong-Ling
authors.initials: HL
authors.lastname: Gao