Anion assisted self-assembly of a Ni(II) complex into metallo-supramolecular network involving H-bonded synthons as nodes

A trinuclear nickel complex {[Ni3(HAmTrz)6·6H2O]·2H2O·6NO3]}n 1 has been synthesized under hydrothermal condition and characterized by single-crystal X-ray crystallography, elemental analysis, IR, and TG/DTA. Nitrate anions of the crystal lattice are found to play an important role in the molecular self-assembly of [Ni3(HAmTrz)6.6H2O]6+ cationic building block into an overall three-dimensional network of 1 involving variety of homomeric R 8 4 ( 36 ) and heteromeric R 2 2 ( 8 ) , R 4 4 ( 20 ) , R 8 8 ( 41 ) supramolecular synthons. Furthermore, the material exhibits magnetic interaction of the Ni(II) centers existing in the whole trimeric building block.