Molecular rotor of Cs2([18]crown-6)3 in the solid state coupled with the magnetism of [Ni(dmit)2]
Molecular rotor of Cs2([18]crown-6)3 in the solid state coupled with the magnetism of [Ni(dmit)2]
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DOI：
10.1021/ja043527a
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发表时间：
2005-03-30
影响因子：
15
通讯作者：
Saito, K
中科院分区：
文献类型：
--
作者：
Akutagawa, T;Shitagami, K;Saito, K
在Cs-2（[18]crown-6）（3）[Ni（dmit）（2）]（2）晶体中实现了可在固态下驱动的纳米级分子转子。为了提供转子的分子运动和电子系统之间的相互作用，将每个分子上带有一个S =（1）/（2）自旋的[Ni（dmit）（2）]（-）离子引入晶体中。[18]冠-6分子在Cs-2（[18]冠-6）（3）超分子中的旋转使用X射线衍射、NMR和比热测量来证实。[Ni（dmit）（2）]（-）离子的磁性与分子的转动有很强的相关性。此外，通过应用流体静压力实现了晶体内分子旋转的制动。
Nanoscale molecular rotors that can be driven in the solid state have been realized in Cs-2([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 Cs-2([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.