Abstract
Three nickel(II) complexes, namely [Ni(BH)3](H2O)(NO3)(ClO4) 1, [Ni(BH)2(NO3)2] 2 and [Ni(BH)(Tren)](ClO4)2 3 (BH = Benzoylhydrazine, Tren = Tris(2-aminoethyl)amine) have been synthesized and characterized by physico-chemical techniques. X-ray crystallographic analysis shows the nickel to be six-coordinated in these complexes. The complexes are efficient catalysts for the dismutation of superoxide in alkaline DMSO-NBT assays. The IC50 values are 74,108 and 105 μM for 1, 2 and 3, respectively.
Graphical Abstract
Three nickel(II) complexes with bidentate ligand viz.; [Ni(BH)3](NO3)(ClO4)(H2O) 1, [Ni(BH)2(NO3)2] 2 and [Ni(BH)(Tren)](ClO4)2 3 have been synthesized and characterized, including crystal structure, (Fig. 1) spectral characterization and electrochemical studies. X-ray crystallographic analysis shows the nickel to be six-coordinated mode in the respective complexes. The molecules of complexes 1 and 2 may stabilize in the crystal lattice due to the presence of π, π-interactions.
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Acknowledgments
Our grateful thanks are due to the National Diffraction Facility, X-ray Division, and RSIC (SAIF), IIT, Mumbai, for single crystal data collection. The Head RSIC (SAIF), Central Drug Research Institute, Lucknow, is also thankfully acknowledged for providing analytical and spectral facilities. Financial assistance from UGC [Scheme no. 36-28/2008 (SR) and DRDO] [Scheme no. ERIP/Er 0603574/m/01/1118], Delhi, is also thankfully acknowledged.
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Appendix A. Supplementary material
Appendix A. Supplementary material
CCDC 766594, 766595 and 766596 contain the supplementary crystallographic data for [Ni(BH)3](NO3)(ClO4)(H2O) 1, [Ni(BH)2(NO3)2] 2 and [Ni(BH)(Tren)](ClO4)2 3 (BH = Benzoylhydrazine, Tren = Tris(2-aminoethyl)amine). These data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html, or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax (+44) 1223-336-033; or e-mail: deposit@ccdc.cam.ac.uk.
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Patel, R.N., Singh, A., Shukla, K.K. et al. Synthesis, characterization and biological activity studies of octahedral nickel(II) complexes. Transition Met Chem 36, 179–187 (2011). https://doi.org/10.1007/s11243-010-9451-1
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DOI: https://doi.org/10.1007/s11243-010-9451-1