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Synthesis, X-ray structural characterization, and electrochemical investigations on a semiconducting Ni(II) dithiolate with tris(1,10-phenanthroline)nickel(II) as counter-cation

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Abstract

An ion-pair complex [Ni(o-phen)3][Ni(L)2]2.CH2Cl2 (1) [L = 1,2-diphenylethylene-1,2-dithiolate, o-phen = 1,10-phenanthroline] has been synthesized and X-ray crystallographically characterized. The solution structure of 1, as derived from cyclic voltammetry, conforms well to the solid-state molecular structure. The redox peaks obtained from the electrochemical analysis of 1 are to some extent a combination of the peaks obtained individually for [Ni(o-phen)3]2+ and [Ni(L)2]. Moreover, the reaction protocol for the synthesis of the title complex by the addition of o-phen to [Ni(L)2] is analyzed electrochemically. 1 conducts electricity in solid-state. The electrical conductivity varied on varying temperatures from 308 K (35 °C) to 423 K (150 °C). The compound is found to be thermally unstable after 150 °C.

Graphical abstract

An ion-pair complex [Ni(o-phen)3][Ni(L)2]2.CH2Cl2 (1) [L = 1,2-diphenylethylene-1,2-dithiolate] has been synthesized and characterized by X-ray crystallography. On electrochemical characterization in solution, the redox peaks (reduction) obtained from the cyclic voltammetry of 1 are found to be a combination of the peaks obtained individually for [Ni(o-phen)3]2+ and [Ni(L)2]. 1 also conducts electricity in a solid state like a semiconducting material.

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Acknowledgements

One of the authors (AD) is thankful to CSIR, India for his fellowship and contingency grants. The authors are also thankful to Dr. Subhrajyoti Bhandary, FWO Researcher, Department of Chemistry, Ghent University, Belgium for several crystallographic discussions. The mass spectral measurement from Central Research Facility, IIT Ropar, India is gratefully acknowledged.

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Correspondence to Vinayak B Kamble, SK Jasimuddin or Rajarshi Ghosh.

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Arghya Dutta: The present work is dedicated to the memories of this author who very suddenly passed away during the revision process of this manuscript.

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Dutta, A., Mahanta, A., Panda, S.J. et al. Synthesis, X-ray structural characterization, and electrochemical investigations on a semiconducting Ni(II) dithiolate with tris(1,10-phenanthroline)nickel(II) as counter-cation. J Chem Sci 135, 62 (2023). https://doi.org/10.1007/s12039-023-02179-w

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  • DOI: https://doi.org/10.1007/s12039-023-02179-w

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