A Supramolecular Trinuclear Nickel(II) Complex with Asymmetric Salamo-type Ligand: Synthesis and Crystal Structure

作者：Dong W K^*; Meng J L; Zhang X Y; Zhao M M; Li G; Dong X Y

来源：Asian Journal of Chemistry, 2013, 25(17): 9970-9974.

• Asymmetric Salamo-type ligand
• Ni(II) complex
• Synthesis
• Crystal structure

A supramolecular trinuclear Ni(II) complex, namely {[NiL(EtOH)(mu-OAc)](2)Ni}center dot EtOH, has been synthesized through the complexation of nickel(II) acetate tetrahydrate with 5-methoxy-4'-bromo-2,2'-[ethylenedioxybis(nitrilomethylidyne)] diphenol (H2L). The Ni(II) complex comprises three Ni(II) atoms, two deprotonated L-2-units, two acetate aions, two coordinated and one non-coordinated ethanol molecules. In the crystal structure, the terminal Ni(II) (Ni2 or Ni2(#1)) atom is located in the cis-N2O2 coordination cavity of the L-2-units and coordinated to an oxygen (O7) atom from the mu-acetato anion and an oxygen (O8) atom from the coordinated ethanol molecule in the axial positions. Meanwhile, the central Ni(II) (Ni1) atom is completed by quadruple mu-phenoxo oxygen (O3, O4, O3(#1) and O4(#1)) atoms from two L-2-units and double mu-acetato oxygen (O6 and O6(#1)) atoms. All the Ni(II) atoms are hexa-coordinated, showing slightly distorted octahedral coordination arrangements. The Ni(II) complex is linked to form an infinite 2D layer supramolecular structure through intermolecular O-H center dot center dot center dot O, C-H center dot center dot center dot O and C-H center dot center dot center dot pi hydrogen bond interactions.

• 出版日期2013-12
• 单位兰州交通大学