US EPA

4258073 

Journal Article 

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

Dong, WK; Meng, JL; Zhang, XY; Zhao, MM; Li, G; Dong, XY 

2013 

Yes 

Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 

25 

17 

9970-9974 

WOS:000330238700120 

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. 

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