Abstract
A new mixed ligand cationic–anionic nickel(II) complex, [NiL 2][Ni(NCS) 4(H 2O) 2] ( 1), where L = 1,4-diazepane has been synthesized by reacting nickel perchlorate with 1,4-diazepane and ammonium thiocyanate in the 1:1:2 M ratio. The complex has been characterized by elemental analysis, IR spectroscopy, TGA and single crystal X-ray diffraction studies. Structural studies reveal the presence of two independent mononuclear complex ions in 1 viz., a square planar [NiL 2] 2+ and an octahedral [Ni(NCS) 4(H 2O) 2] 2− which are held together by H-bonding to form a 3D supramolecular structure in the solid state.
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