Journal
INORGANICA CHIMICA ACTA
Volume 363, Issue 14, Pages 3641-3646Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2010.05.009
Keywords
Ni(II) complexes; 2,6-Diacetyl pyridine monooxime Schiff's base; X-ray crystal structure; Luminescence
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Funding
- CSIR
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Five Ni(II) complexes of aroyl hydrazone ligands with 2,6-diacetyl pyridine monooxime are reported. Xray crystal structure of the Ni(II) salicyloylhydrazone complex is also reported. In these complexes Ni(II) is in a distorted octahedral N4O2 coordination environment, with each of the two ligands coordinating through the pyridine nitrogen, imino-hydrazone nitrogen and the deprotonated oxygen of the hydrazone moiety. The iminooxime group remain uncoordinated in both the ligands and the planes containing the CH3-C=N-OH groups are orthogonal to the adjacent pyridine rings. On excitation at 375 nm, the ligands as well as the Ni(II) complexes, show luminescence. However, the Ni(II) complexes have much lower quantum yield of emission than the free ligands. (c) 2010 Elsevier B.V. All rights reserved.
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