Parity Violation Dominates the Dynamics of Chirality in Dichlorodisulfane.
Parity Violation Dominates the Dynamics of Chirality in Dichlorodisulfane.
复制标题
宇称不守恒主导二氯二硫烷的手性动力学。
作者：
R. Berger;M. Gottselig;M. Quack;Martin Willeke
根据手性分子结构和动力学的传统观点，宇称破坏的影响毫无意义地小;因此，对映异构体将作为与手性相关的结构存在，由于非常长的隧穿时间，这些结构实际上是稳定的。以ClSSCl作为第一个例子，电弱和隧穿动力学计算表明，由两种对映体（（P）-和（M）-ClSSCl，图中显示扭转势）之间的宇称破坏能量差ΔEpv引起的去对称性远远超过对称情况下的隧穿分裂。这些结果是我们的概念的分子手性的根本利益。
Meaninglessly small would be the effects from parity violation according to the traditional point of view on the structure and dynamics of chiral molecules; enantiomers would thus exist as symmetry-related structures, which are de facto stable because of very long tunneling times. With ClSSCl as the first example, electroweak and tunneling dynamics calculations demonstrate that the de lege asymmetry arising from the parity-violating energy difference ΔEpv between the two enantiomers ((P)- and (M)-ClSSCl, the figure shows the torsional potentials) dominates by far over the tunneling splitting in the symmetrical case. These results are of fundamental interest for our concept of molecular chirality.