A unique tetranuclear nickel(II) complex containing pyridine-2-carboxaldehyde derivative bearing an intramolecular acetato: Synthesis, crystal structure and magnetic property

作者：Feng, Xun; Ma, Lu-Fang; Wang, Li-Ya^*; Zhao, Jian-She

来源：Inorganic Chemistry Communications, 2011, 14(4): 584-589.

DOI：10.1016/j.inoche.2011.01.030

• Nickel(II) complex
• Acetate bridge
• Cubane-like tetranuclear cluster
• Anti-magnetic properties

The novel tetranuclear nickel(II) carboxylate complex formulated as [Ni-4(L)(2)(m(2)-OAc)(2) (m(3)-OAc)(2)]center dot CH3OH center dot H2O, (1) (where L = 2-oxo-1,2-di(pyridin-2-yl)ethyl picolinate) has been synthesized and characterized systematically. The complex crystallizes in orthorhombic system, consisting of a tetranuclear Ni(II) distorted cubane-like core, in which four Ni(II) ions are bridged by four acetato groups. Each Ni(II) ion is further ligated with nitrogen atoms of bridging pyridine-2-carboxaldehyde derivative, forming either Ni, N, N, O- or Ni, N, O-chelate macro-rings. Magnetic susceptibility studies indicate that the weak antiferromagnetic interaction is operating between the adjacent nickel ions bridged via the carboxylate oxygen atoms within the complex.

• 出版日期2011-4
• 单位洛阳师范学院; 西北大学