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Fullerene C60 dianion salt, (Me4N+)2{C60(2-)}(TPC)2.2C6H4Cl2, where TPC is triptycene, obtained by a multicomponent approach

Abstract

A multicomponent approach provided a new salt (Me4N+)2{C60(2-)}(TPC)2.2C6H4Cl2 (1) containing the discrete C60(2-) dianions, where TPC is triptycene. The crystal structure consists of alternating layers of the closely packed zigzag fullerene chains solvated with C6H4Cl2 molecules and the TPC network with Me4N+ cations. The hexagonal vacancies in TPC network accommodate the cations and simultaneously acts as a template for the formation of zigzag fullerene chains. Optical spectra support the formation of C60(2-) dianions. According to EPR the C60(2-) dianions have diamagnetic singlet ground state below 140 K. Increased intensity of the EPR signal above this temperature reflects the growing thermal population of the excited triplet state. This signal has g = 2.0003 and linewidth of 2.53 mT at 302 K and the estimated singlet-triplet energy gap is 674 +_ 10 K (468 +- 7 cm-1).

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Publication details

The article was received on 03 Apr 2017, accepted on 11 May 2017 and first published on 11 May 2017


Article type: Letter
DOI: 10.1039/C7NJ01096F
Citation: New J. Chem., 2017, Accepted Manuscript
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    Fullerene C60 dianion salt, (Me4N+)2{C60(2-)}(TPC)2.2C6H4Cl2, where TPC is triptycene, obtained by a multicomponent approach

    D. V. Konarev, S. I. Troyanov, A. Otsuka, H. Yamochi, G. Saito and R. N. Lyubovskaya, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01096F

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