Synthesis, structure and magnetic properties of a series of cubane-like clusters derived from Schiff base ligands
作者： Xiaoting Qin , Shuai Ding , Xuebin Xu , Rui Wang , Ye Song
DOI: 10.1016/J.POLY.2014.03.040
关键词:
摘要: One new hexanuclear Cu(II) complex [Cu4(L1)4Na2(ClO4)(H2O)](ClO4)(H2O)0.5 (1) and two tetranuclear Ni(II) complexes [Ni4(L2)4(CH3OH)4] (2), [Ni4(o-vanillinate)4(μ3-N3)4(CH3OH)4] (3) have been synthesized structurally characterized. All the three 1, 2, 3 characterized by elemental analysis, FTIR, single crystal X-ray diffraction studies. Single studies reveal that all consist of a cubane core in which four Cu(II)/Ni(II) centers 1 2 are linked μ3-alkoxo bridges ions azido bridge end-on fashion. The skeleton structures cores distorted from idealized cube most show further distortion. variable-temperature (2–300 K) magnetic susceptibilities magnetizations compounds were measured. Variable-temperature susceptibility data exhibit dominant antiferromagnetic interaction while ferromagnetic interactions 3.
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