Synthesis and x-ray crystal structures of 1 : 1 complexes of nickel(II) nitrate with 1,10-phenanthroline and with 2,2′-bipyridyl

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Blue crystals of [Ni(phen)(H 2O) 4](NO 3) 2·H 2O (where phen = 1,10-phenanthroline) and of [Ni(bipy)(H 2O) 3(NO 3)]NO 3 (where bipy = 2,2′-bipyridyl) were prepared and their structures determined by single crystal X-ray crystallography. In the phenanthroline complex, the nitrates are not coordinated to the nickel but in the bipyridyl complex, one nitrate is coordinated to the nickel as a monodentate ligand. The IR spectra and magnetic susceptibilities are reported.