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Wilson等人曾研究过碘代烷在266nm的激光光解RI→R+I＊(~2P_(1/2))(1)RI→R+I(~2P_(3/2))(2)由于他们所用的光解产物谱仪不能改变产物的检测方向,因而对C_2H_5I,n-C_3H_7I和i-C_3H_7I的光解通道(1)和(2)在飞行时间(TOF)谱上的分离没有成功。我们用束源可转动的分子束激光裂解产物谱仪(飞行距离531mm)研究了CH_3I和C_2H_5I在248nm的激光裂解后,又分别对n-C_3H_7I和i-C_3H_7I进行研究,并实现了I＊(~2P_(1/2))和I(~2P_(3/2))光解通道在TOF谱上的分离,测得光解通道比见表1。
Wilson et al. Studied the photodissociation of RI → R + I * (~ 2P 1/2) (1) RI → R + I (~2P 3/2) The separation of the photolysis channels (1) and (2) of C_2H_5I, n-C_3H_7I and i_C_3H_7I from time-of-flight (TOF) spectra was unsuccessful due to the fact that the photolysis spectrometer used by them did not change the detection direction of the products . We studied the n-C_3H_7I and i_C_3H_7I after 248nm laser pyrolysis of CH_3I and C_2H_5I with the beam source rotatable molecular beam laser pyrolysis spectrometer (flight distance 531mm), and realized the I * ( ~ 2P_ (1/2)) and I (~ 2P_ (3/2)) photolysis channels in the TOF spectrum separation, photolysis channel ratio measured in Table 1.