作者:D.C. McKean、G.P. McQuillan
DOI:10.1016/0022-2860(80)80325-5
日期:1980.4
Abstract Vibrational spectra in the range 200–3000 cm −1 are reported and assigned for the species (CH 3 ) 2 PH, (CH 3 ) 2 PD, (CD 3 ) 2 PH, (CD 3 ) 2 PD, CH 3 CD 3 PH and CH 3 CD 3 PD. The spectra in the range 1020–500 cm −1 are complicated due to the coupling between δPH, ϱMe and the skeletal modes of the molecule. Interpretation is only possible through a force field which is markedly different
摘要 200–3000 cm -1 范围内的振动光谱被报道并分配给物质 (CH 3 ) 2 PH, (CH 3 ) 2 PD, (CD 3 ) 2 PH, (CD 3 ) 2 PD, CH 3 CD 3 PH 和 CH 3 CD 3 PD。由于 δPH、ϱMe 和分子骨架模式之间的耦合,1020–500 cm -1 范围内的光谱很复杂。只有通过与早期二甲硫显着不同的力场才能进行解释。该力场预测未耦合的 δPH 频率为 835 ( a ) 和 909 cm -1 ( a ),将 PH 弯曲主要与骨架平面外甲基摇摆 (ϱ i ) 耦合,并包括低 p||( a ) 弯曲常数,两个相互作用常数的高骨架弯曲常数和不寻常的迹象。在 78 K 的结晶相中,两个甲基是不等价的。