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Electronic Absorption, Emission Spectral, and Electrochemical Studies of [Cu(OBTTAP)] Linked (bpy)2RuII, (phen)2RuII, and (PPh3)CpRuII Complexes

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Abstract

Three new dinuclear complexes [{Cu(OBTTAP)}{Ru(bpy)2}][PF6]2, [{Cu(OBTTAP)}{Ru(phen)2}]· [PF6]2, and [{Cu(OBTTAP)}{RuCp(PPh3)}][PF6], and three pentanuclear complexes [{Cu(OBTTAP)}{Ru(bpy)2}4]· [PF6]8, [{Cu(OBTTAP)}{Ru(phen)2}4][PF6]8, and [{Cu(OBTTAP)}{RuCp(PPh3)}4][PF6]4 were synthesized by dative binding of (bpy)2RuII, (phen)2RuII and (PPh3)CpRuII moieties to periphery of the [Cu(OBTTAP)] 1. Their structures were characterized using IR, 1H NMR, UV-Vis, and MALDI-TOF mass spectral data. The peripheral Ru(II) binding caused a hypsochromic shift in the Q-band absorption of the [Cu(OBTTAP)] core while the bathochromic shift to the Soret absorption. They all exhibit a strong emission near λmax = 425 nm. The excitation profile of this emission shows its origin to Soret absorption. In the cyclic voltammetry, they exhibit multiple reversible oxidation waves due to Ru(II)/Ru(III) and OBTTAP/OBTTAP+ processes.

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ACKNOWLEDGMENTS

The authors gratefully acknowledge to the Head of Department of Chemistry at the Indian Institute of Technology Roorkee, India, for providing access to the instrumental facilities. We would also like to acknowledge the Head of RSIC CDRI, Lucknow, India, and RSIC Chandigarh University, Chandigarh, India for their contribution in recording NMR and mass spectra of the compounds and Council of Scientific & Industrial Research, New Delhi (India).

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  1. Department of Chemistry, D.B.S. (PG) College Dehradun, 248001, Uttarakhand, India

    A. Kumar

  2. Department of Chemistry, Fiji National University, Lautoka, Fiji

    R. Prasad

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Kumar, A., Prasad, R. Electronic Absorption, Emission Spectral, and Electrochemical Studies of [Cu(OBTTAP)] Linked (bpy)2RuII, (phen)2RuII, and (PPh3)CpRuII Complexes. Russ J Gen Chem 93, 1474–1485 (2023). https://doi.org/10.1134/S1070363223060208

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  • DOI: https://doi.org/10.1134/S1070363223060208

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