"Giant" gyroscope-like molecules consisting of dipolar Cl-Rh-CO rotators encased in three-spoke stators that define 25-27-membered macrocycles.
"Giant" gyroscope-like molecules consisting of dipolar Cl-Rh-CO rotators encased in three-spoke stators that define 25-27-membered macrocycles.
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“巨型”陀螺仪状分子由偶极 Cl-Rh-CO 旋转体组成，封装在三辐定子中，定义了 25-27 元大环化合物。
DOI：
10.1002/anie.200601191
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发表时间：
2006
影响因子：
--
通讯作者：
J. Gladysz
中科院分区：
文献类型：
--
作者：
Leyong Wang;F. Hampel;J. Gladysz
目前人们对分子转子非常感兴趣，分子转子由“定子”、“旋转器”和连接轴组成。一个重要的目标是合成这样的组件，在这些组件中，转子被部分“封闭”或立体地与其环境隔离。[1-6]这种方法类似于宏观机器，在宏观机器中，由于安全或机械原因，旋转部件通常被包裹在保护性外壳中。两类突出的分子旋转器是指南针和陀螺仪。当旋转器带有偶极矩时，它们可以在静电场中对准，类似于指南针，或者在旋转电场中被迫单向转动，类似于陀螺仪。我们发现，三方双锥铁三甲基络合物反式[Fe(CO)3(P{CH2)nch=CH2}3)2](n=4-6)和方形平面的钯和二氯化铂配合物反式[MCl2(P{CH2)nch=CH2}3)2](n=6，M=Pd，Pt)都经历了三次分子内烯内变位反应。氢化提供了第一类和第二类笼形分子，它们带有明显的
There is intense current interest in molecular rotors,[1] which are comprised of a “stator”, a “rotator”, and a connecting axis. One important objective is the synthesis of assemblies in which the rotators are partially “enclosed” or sterically shielded from their environments.[1–6] This approach follows by analogy to macroscopic machines in which rotating components are often for safety or mechanical reasons encased in protective housings. Two prominent classes of molecular rotors are compasses and gyroscopes.[3, 4] When rotators feature dipole moments, they can be aligned in static electric fields, similar to compasses, or forced to turn unidirectionally in rotating electric fields,[1] similar to gyroscopes. In all cases, it is desirable that rotation be as “frictionless” as possible, without interference from nearby molecules or ions.We have found that the trigonal-bipyramidal iron tricarbonyl complexes trans-[Fe (CO) 3 (P {(CH2) nCH= CH2} 3) 2](n= 4–6) and square-planar palladium and platinum dichloride complexes trans-[MCl2 (P {(CH2) nCH= CH2} 3) 2](n= 6, M= Pd, Pt) undergo threefold intramolecular alkene metatheses that couple the trans phosphine ligands. Hydrogenations afford cage molecules of the types I and II, which bear a clear