NDLI: Supramolecular approach for solid state Brownian rotators

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Akutagawa, Tomoyuki Nakamura, Takayoshi
Description	Author Affiliation: Akutagawa T ( Research Institute for Electronic Science, Hokkaido University, N20W10 kita-ku, Sapporo, 001-0020, Japan. takuta@es.hokudai.ac.jp)
Abstract	Artificial molecular rotators were designed in an attempt to achieve unidirectional molecular rotation. Supramolecular assemblies of cations and crown ethers in the solid state were shown to form rotator structures, diverse in their rotational symmetry and frequency. The counter cation of $[Ni(dmit)_{2}]^{−}$ anion, bearing one S = 1/2 spin, was used to couple molecular rotation to magnetic properties. Random rotation of [18]crown-6 molecules was first observed in the $Cs^{+}_{2}([18]crown-6)_{3}$ supramolecule, where the rotational freedom of [18]crown-6 rotators was evidently coupled to the magnetic properties of $[Ni(dmit)_{2}]^{−}π-dimer.$ In other cases, dual rotary motions of anilinium([18]crown-6) and rotator–stator assemblies of (adamantylammonium)(dibenzo[18]crown-6) were investigated as a means to control rotational symmetries and frequencies in the solid state. The supramolecular approach for construction of molecular rotator–stator assemblies in the solid state is a convenient approach to the design of molecular rotary functionality in $[Ni(dmit)_{2}]^{−}$ salts.
ISSN	14779226
Issue Number	45
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2008-12-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Crown Compounds Chemistry Molecular Conformation Hydrogen Bonding Magnetic Resonance Spectroscopy Models, Molecular Myosins Quaternary Ammonium Compounds Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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