Crystallographic and chiroptical studies on tetraarylferrocenes for use as chiral rotary modules for molecular machines.
Crystallographic and chiroptical studies on tetraarylferrocenes for use as chiral rotary modules for molecular machines.
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DOI：
10.1002/chem.200601098
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发表时间：
2007-02
期刊：
影响因子：
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通讯作者：
T. Muraoka;K. Kinbara;A. Wakamiya;S. Yamaguchi;T. Aida
中科院分区：
文献类型：
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作者：
T. Muraoka;K. Kinbara;A. Wakamiya;S. Yamaguchi;T. Aida
成功确定了偶氮苯单元具有反式构型的外消旋形式的手性分子剪刀1（rac-trans-1）的晶体结构，其中剪刀采用两个相互重叠的刀片苯基的封闭几何形状。 X 射线晶体学测定 (1S,1'S)-10 的结构也取得了成功，(1S,1'S)-10 是 trans-1 关键前体的衍生物。在(1S,1'S)-10的晶体结构的基础上，确定了1和相关分子机器的绝对构型，例如分子踏板2和自锁转子3，它们都含有手性四取代二茂铁模块。还确定了这些分子机器及其合成前体的绝对构型和圆二色性之间的相关性。
A crystal structure of the racemic form of chiral molecular scissors 1 with a trans configuration at the azobenzene unit (rac-trans-1), in which the scissors adopt a closed geometry with two blade phenyl groups that overlap each other, was successfully determined. X-ray crystallographic determination of the structure of (1S,1'S)-10, which is a derivative of the key precursor of trans-1, was also successful. On the basis of the crystal structure of (1S,1'S)-10, the absolute configuration of 1 and related molecular machines, such as molecular pedal 2, and self-locking rotor 3, which all contain a chiral tetrasubstituted ferrocene module, were determined. A correlation between the absolute configuration and the circular dichroism properties of these molecular machines and their synthetic precursors was also determined.