五卤化磷分子结构的剖析

AN ANALYSIS OF THE MOLECULAR STRUVTURE OF PHOSPHORUS PENTAHALINES

研究了五卤化磷分子的结构，从磷原子ｄ轨道参与成键和不参与成键两个方面阐明了五卤化磷气态分子结构中存在的两种不同键，并用Ｂｅｒｒｙ拟转动机理说明了这两种不同键在空间的位置交换，解释了核磁共振技术不能区分５个磷卤键和５个磷卤键表现出完全相同性质的实验事实。

Based on the two cases in which the dorbit of phosphorus does or does not get in-volved in bonding , the paper proves that in gaseous stats the molecular structure of phosphorus pentahalidescontains 2 different bonds, whose position-exchange in space is illustrated with Berry's pseudorotationmechanism.thus the paper offers a sound expllanation to the experimental fact that the NMR cannot identify5 phosphorus-halogen bonds and that the 5 bonds can reveal the same property.