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Room-Temperature Chemical Synthesis of C2

preprint
submitted on 18.04.2019 and posted on 19.04.2019 by Kazunori Miyamoto, Shodai Narita, Yui Masumoto, Takahiro Hashishin, Mutsumi Kimura, Masahito Ochiai, Masanobu Uchiyama
Diatomic carbon (C2) is historically an elusive chemical species. It has long been believed that the generation of C2 requires extremely high “physical” energy, such as an electric carbon arc or multiple photon excitation, and so it has been the general consensus that the inherent nature of C2 in the ground state is experimentally inaccessible. Here, we present the first “chemical” synthesis of C2 in a flask at room temperature or below, providing the first experimental evidence to support theoretical predictions that (1) C2 has a singlet biradical character with a quadruple bond, thus settling a long-standing controversy between experimental and theoretical chemists, and that (2) C2 serves as a molecular element in the formation of sp2-carbon allotropes such as graphite, carbon nanotubes and C60.

Funding

JSPS KAKENHI (S) (17H06173)

KAKENHI (B) (17H03017)

NAGASE Science & Technology Development Foundation

Sumitomo Foundation

History

Email Address of Submitting Author

uchiyama@mol.f.u-tokyo.ac.jp

Institution

Graduate School of Pharmaceutical Sciences, The University of Tokyo

Country

Japan

ORCID For Submitting Author

0000-0001-6385-5944

Declaration of Conflict of Interest

The authors declare no competing financial interest.

Version Notes

Version 1.0

Exports