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Stable Ferromagnetic Crystal of Two‐Dimensional Manganese‐Chromium Oxalate with Supramolecular Cation
Author(s) -
Kubo Kazuya,
Yoshitake Masashi,
Hoshino Norihisa,
Noro Shinichiro,
Akutagawa Tomoyuki,
Nakamura Takayoshi
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000149
Subject(s) - chemistry , supramolecular chemistry , oxalate , crystallography , crystal structure , manganese , ferromagnetism , chromium , inorganic chemistry , organic chemistry , physics , quantum mechanics
A supramolecular cation of ( m ‐FAni + )( tst‐ DCH[18]crown ‐ 6), where m ‐FAni + and tst‐ DCH[18]crown ‐ 6 denote m ‐fluoroanilinium and trans‐syn‐trans‐ dicyclohexano[18]crown ‐ 6, respectively, was introduced into a ferromagnetic {[Mn II Cr III (oxalate) 3 ] – } layer to obtain a stable organic‐inorganic hybridized crystal. The crystal structure of ( m ‐FAni + )( tst ‐DCH[18]crown ‐ 6){[Mn II Cr III (oxalate) 3 ] – } was constructed by alternate stacking of a two‐dimensional honeycomb layer of {[Mn II Cr III (oxalate) 3 ] – } and the supramolecular cations. Cyclohexyl moieties of tst ‐DCH[18]crown ‐ 6 penetrated the pores of the honeycomb layers, excluding solvent molecules in the crystal. The anionic layers showed ferromagnetic order of Mn II and Cr III ions with S = 5/2 and S = 3/2 spins, respectively, at 5.5 K. Although the m ‐FAni + showed disorder with respect to 180° rotation of the aryl ring, no significant anomaly was observed in the dielectric response, suggesting that the disorder is static.