Volume 59, Issue 6 pp. 2399-2406
Research Article

An Organic–Inorganic Hybrid Exhibiting Electrical Conduction and Single-Ion Magnetism

Dr. Yongbing Shen

Corresponding Author

Dr. Yongbing Shen

Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan

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Dr. Goulven Cosquer

Corresponding Author

Dr. Goulven Cosquer

Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan

Present address: Research Group of Solid Material Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima, 739-8526 Japan

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Prof. Hiroshi Ito

Prof. Hiroshi Ito

Department of Applied Physics, Nagoya University, Chikusa-ku, Nagoya, 464-603 Japan

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Dr. David C. Izuogu

Dr. David C. Izuogu

Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK

Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, 410001 Enugu State, Nigeria

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Prof. Alex J. W. Thom

Prof. Alex J. W. Thom

Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK

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Dr. Toshiaki Ina

Dr. Toshiaki Ina

Research & Utilization Division (Japan) Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Sayou-gun, Hyogo, 679-5198 Japan

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Dr. Tomoya Uruga

Dr. Tomoya Uruga

Research & Utilization Division (Japan) Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Sayou-gun, Hyogo, 679-5198 Japan

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Dr. Takefumi Yoshida

Dr. Takefumi Yoshida

Electronic Functional Macromolecules Group, National Institute for Materials Science (NIMS), Tsukuba, 305-0044 Japan

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Prof. Shinya Takaishi

Prof. Shinya Takaishi

Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan

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Prof. Brian K. Breedlove

Prof. Brian K. Breedlove

Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan

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Dr. Zhao-Yang Li

Dr. Zhao-Yang Li

School of Materials Science and Engineering, Nankai University, Tianjin, 300350 China

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Prof. Masahiro Yamashita

Corresponding Author

Prof. Masahiro Yamashita

Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan

School of Materials Science and Engineering, Nankai University, Tianjin, 300350 China

WPI-Advanced Institute for Materials Research (AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan

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First published: 29 November 2019
Citations: 21

Graphical Abstract

Magnetic personality: Electrocrystallisation of tetrathiafulvalene (TTF) and the magnetic precursor [Co(pdms)2] (H2pdms=1,2-bis(methanesulfonamido)benzene) afforded a 3D conducting single-ion magnet. Multiple charge-transfer interactions between the components produce partial oxidation states for TTF, the Co ion, and the pdms ligand, allowing electrical conductivity at low temperatures.

Abstract

The first three-dimensional (3D) conductive single-ion magnet (SIM), (TTF)2[Co(pdms)2] (TTF=tetrathiafulvalene and H2pdms=1,2-bis(methanesulfonamido)benzene), was electrochemically synthesised and investigated structurally, physically, and theoretically. The similar oxidation potentials of neutral TTF and the molecular precursor [HNEt3]2[M(pdms)2] (M=Co, Zn) allow for multiple charge transfers (CTs) between the SIM donor [M(pdms)2]n and the TTF.+ acceptor, as well as an intradonor CT from the pdms ligand to Co ion upon electrocrystallisation. Usually TTF functions as a donor, whereas in our system TTF is both a donor and an accepter because of the similar oxidation potentials. Furthermore, the [M(pdms)2]n donor and TTF.+ acceptor are not segregated but strongly interact with each other, contrary to reported layered donor–acceptor electrical conductors. The strong intermolecular and intramolecular interactions, combined with CT, allow for relatively high electrical conductivity even down to very low temperatures. Furthermore, SIM behaviour with slow magnetic relaxation and opening of hysteresis loops was observed. (TTF)2[Co(pdms)2] (2-Co) is an excellent building block for preparing new conductive SIMs.

Conflict of interest

The authors declare no conflict of interest.

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