Molecular Rotor of Cs2([18]crown-6)3 in the Solid State Coupled with the Magnetism of [Ni(dmit)2]
- Tomoyuki Akutagawa ,
- Kozo Shitagami ,
- Sadafumi Nishihara ,
- Sadamu Takeda ,
- Tatsuo Hasegawa ,
- Takayoshi Nakamura ,
- Yuko Hosokoshi ,
- Katsuya Inoue ,
- Satoshi Ikeuchi ,
- Yuji Miyazaki , and
- Kazuya Saito
Abstract

Nanoscale molecular rotors that can be driven in the solid state have been realized in Cs2([18]crown-6)3[Ni(dmit)2]2 crystals. To provide interactions between the molecular motion of the rotor and the electronic system, [Ni(dmit)2]- ions, which bear one S = 1/2 spin on each molecule, were introduced into the crystal. Rotation of the [18]crown-6 molecules within a Cs2([18]crown-6)3 supramolecule above 220 K was confirmed using X-ray diffraction, NMR, and specific heat measurements. Strong correlations were observed between the magnetic behavior of the [Ni(dmit)2]- ions and molecular rotation. Furthermore, braking of the molecular rotation within the crystal was achieved by the application of hydrostatic pressure.
*
In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.
†
Research Institute for Electronic Science, Hokkaido University.
‡
Graduate School of Environmental Earth Science, Hokkaido University.
¶
CREST, JST.
⊥
Graduate School of Science, Hokkaido University.
‖
Institute for Molecular Science.
§
Research Center for Molecular Thermodynamics, Graduate School of Science, Osaka University.
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