MOLECULAR CONSTANTS OF SPF3 SPCL3 AND SPBR3 . A NOTE ON P-S BOND AND ITS STRETCHING FREQUENCY

被引:17
作者
CYVIN, SJ
VIZI, B
MULLER, A
KREBS, B
机构
[1] Institute of Theoretical Chemistry, Technical University of Norway
[2] Institute of Inorganic Chemistry, University of Göttingen
关键词
D O I
10.1016/0022-2860(69)87001-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A normal-coordinate analysis has been performed for SPX3 molecules (X = F, Cl, Br). Calculated mean amplitudes of vibration, Coriolis coupling constants and thermodynamic functions are reported. The position of the v(PS) frequency in the three compounds is discussed: it is found to be influenced by force-constant changes in addition to the mechanical coupling. It is also concluded that strong π bonds exist in these molecules. Only recently the assignments which are supposed to be correct for SPF3 and SPBr3 have been published1; in several papers the question has been discussed whether the position of v(PS) is influenced mainly by mechanical coupling, or also by changes in the PS force constants2. Therefore we have reconsidered this problem, and performed a normal-coordinate analysis for the compounds SPX3 (X = F, Cl, Br). © 1969.
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页码:173 / &
相关论文
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