Synthesis, Structure, and Properties of the Fullerene C60 Salt of Crystal Violet, (CV(+) )(C60 (.-) )⋅0.5 C6 H4 Cl2 , which Contained Closely Packed Zigzagged C60 (.-) Chains

Dmitri V Konarev; Alexey V Kuzmin; Salavat S Khasanov; Manabu Ishikawa; Akihiro Otsuka; Hideki Yamochi; Gunzi Saito; Rimma N Lyubovskaya

doi:10.1002/asia.201600242

Synthesis, Structure, and Properties of the Fullerene C60 Salt of Crystal Violet, (CV(+) )(C60 (.-) )⋅0.5 C6 H4 Cl2 , which Contained Closely Packed Zigzagged C60 (.-) Chains

Chem Asian J. 2016 Jun 6;11(11):1705-10. doi: 10.1002/asia.201600242. Epub 2016 May 11.

Authors

Dmitri V Konarev¹, Alexey V Kuzmin², Salavat S Khasanov², Manabu Ishikawa³, Akihiro Otsuka³, Hideki Yamochi³, Gunzi Saito^{4

5}, Rimma N Lyubovskaya⁶

Affiliations

¹ Institute of Problems of Chemical Physics, Russian Academy of Sciences (RAS), Chernogolovka, Moscow Region, 142432, Russia. konarev@icp.ac.ru.
² Institute of Solid State Physics, Russian Academy of Sciences (RAS), Chernogolovka, Moscow Region, 142432, Russia.
³ Research Center for Low Temperature and Materials Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
⁴ Faculty of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tempaku-ku, Nagoya, 468-8502, Japan.
⁵ Toyota Physical and Chemical Research Institute, 41-1, Yokomichi, Nagakute, Aichi, 480-1192, Japan.
⁶ Institute of Problems of Chemical Physics, Russian Academy of Sciences (RAS), Chernogolovka, Moscow Region, 142432, Russia.

PMID: 27062654
DOI: 10.1002/asia.201600242

Abstract

The reduction of fullerene C60 by zinc dust in the presence of crystal violet cations (CV(+) ) yielded a deep-blue solution, from which crystals of (CV(+) )(C60 (.-) )⋅0.5 C6 H4 Cl2 (1) were obtained by slow mixing with n-hexane. The salt contained isolated, closely packed zigzagged chains that were composed of C60 (.-) radical anions with a uniform interfullerene center-to-center distance of 9.98 Å. In spite of the close proximity of the fullerenes, they did not dimerize, owing to spatial separation by the phenyl substituents of CV(+) . The room-temperature conductivity of compound 1 was 3×10(-2) S cm(-1) along the fullerene chains. The salt exhibited semiconducting behavior, with an activation energy of Ea =167 meV. Spins localized on C60 (.-) were antiferromagnetically coupled within the fullerene chains, with a Weiss temperature of -19 K without long-range magnetic ordering down to 1.9 K.

Keywords: antiferromagnetic interactions; crystal violet; fullerenes; magnetic properties; radicals.

Publication types

Research Support, Non-U.S. Gov't