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A new Ni(dmit)2-based organic magnetic charge-transfer salt, (m-PO-CONH- N-methylpyridinium)[Ni(dmit)2]·CH3CN

Akutsu, H, Ito, S, Kadoya, T, Yamada, J, Nakatsuji, S, Turner, Scott and Nakazawa, Y (2018) A new Ni(dmit)2-based organic magnetic charge-transfer salt, (m-PO-CONH- N-methylpyridinium)[Ni(dmit)2]·CH3CN Inorganica Chimica Acta, 482. pp. 654-658.

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Abstract

A new Ni(dmit)2-based organic magnetic charge-transfer (CT) salt, (m-PO-CONH-N-methylpyridinium)[Ni(dmit)2]·CH3CN, where PO = 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl free radical and dmit = 2-Thioxo-1,3-dithiole-4,5-dithiolate, was obtained, the crystal structure and magnetic properties of which are reported. Magnetic susceptibility of the CT salt obeys a combination of 1D ferromagnetic (1DF) Heisenberg (J1DF = +0.26 K) and Singlet-Triplet (ST) models (JST = -51.2 K) with mean field (MF) approximation (JMF = -6.7 K), suggesting that spins on the PO radicals form 1D ferromagnetic chains and spins on the Ni(dmit)2 monoanions forms spin dimers at low temperature, the latter of which was also confirmed by band calculations.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Akutsu, H
Ito, S
Kadoya, T
Yamada, J
Nakatsuji, S
Turner, ScottS.S.Turner@surrey.ac.uk
Nakazawa, Y
Date : 4 July 2018
DOI : 10.1016/j.ica.2018.07.003
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Charge-transfer salts Ni(dmit)2 Electron acceptors
Depositing User : Melanie Hughes
Date Deposited : 04 Jul 2018 11:00
Last Modified : 04 Jul 2019 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/848646

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