An organic superconductor, (TEA)(HEDO-TTF-dc)2·2(H2C2O4), coupled with strong hydrogen-bonding interactions

Yuto Morimachi; Mizuki Urai; Ryota Nakajima; Hajime Kamebuchi; Kazuya Miyagawa; Kazushi Kanoda; Biao Zhou

doi:10.1039/d3cc00080j

An organic superconductor, (TEA)(HEDO-TTF-dc)₂·2(H₂C₂O₄), coupled with strong hydrogen-bonding interactions

Chem Commun (Camb). 2023 Apr 4;59(28):4162-4165. doi: 10.1039/d3cc00080j.

Authors

Yuto Morimachi¹, Mizuki Urai², Ryota Nakajima^{1

3}, Hajime Kamebuchi¹, Kazuya Miyagawa², Kazushi Kanoda², Biao Zhou¹

Affiliations

¹ Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40 Setagaya-Ku, Tokyo 156-8550, Japan. zhou.biao@nihon-u.ac.jp.
² Department of Applied Physics, The University of Tokyo, Hongo 7-3-1 Bunkyo-ku, Tokyo 113-8656, Japan. kanoda@ap.t.u-tokyo.ac.jp.
³ Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan.

PMID: 36853596
DOI: 10.1039/d3cc00080j

Abstract

A new organic superconductor (TEA)(HEDO-TTF-dc)₂·2(H₂C₂O₄) (H₂EDO-TTF-dc = ethylenedioxy-tetrathiafulvalene dicarboxylic acids) with an onset T_C of 4.0 K, was successfully obtained using oxalic acid and HEDO-TTF-dc anion donor. The crystal structure analysis indicated that strong π-π overlaps and very strong intra- and inter-molecular hydrogen-bonding interactions exist between the HEDO-TTF-dc anion donors and oxalic acid molecules.