title: Slow magnetization relaxation in Ni(II)Dy(III)Fe(III) molecular cycles.
abstract: Two cyano- and phenoxo-bridged hexanuclear Ni(II)2Dy(III)2Fe(III)2 (1) and octanuclear Ni(II)4Dy(III)2Fe(III)2 (2) trimetallic cyclic complexes have been obtained. They are the first trimetallic metallocycles. Magnetic studies reveal that 1 and 2 exhibit single-molecule-magnet behavior with an energy barrier of 17.9 K for complex 1 in a 2000 Oe static field and 25.0 K for complex 2 in a zero static field.
authors.affiliation: Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China.
authors.forename: Kong-Qiu
authors.initials: KQ
authors.lastname: Hu
authors.forename: Xiang
authors.initials: X
authors.lastname: Jiang
authors.forename: Shu-Qi
authors.initials: SQ
authors.lastname: Wu
authors.forename: Cai-Ming
authors.initials: CM
authors.lastname: Liu
authors.forename: Ai-Li
authors.initials: AL
authors.lastname: Cui
authors.forename: Hui-Zhong
authors.initials: HZ
authors.lastname: Kou