F_2,F与I_2的化学发光反应  

Chemiluminescent Reactions of F_2 and F Atoms with I_2 Molecules

作　　者：吴成印[1] 储焰南[1] 曹德兆[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所激光光谱学开放实验室,合肥230031

出　　处：《化学学报》1998年第9期914-919,共6页Acta Chimica Sinica

基　　金：国家自然科学基金资助(29373122)

摘　　要：在流动余辉实验装置上，研究了Ｆ２，Ｆ与Ｉ２的化学发光反应，首次在Ｆ＋Ｉ２反应体系中观察到较强的ＩＦ（Ｂ→Ｘ）发射光谱，采用简单碰撞理论地ＩＦ（Ｂ）的振动驰豫进行估算后，得到了其振动布居，发现与Ｆ２＋Ｉ２反应体系中有明显不同的，从而推测这两个反应的激发态产物ＩＦ（Ｂ）是由不同的反应通道形成的，前者由初级反应产物Ｉ２Ｆ与Ｆ原子进一步作用产生。In order to obtain high concentration of IF(B) through chemical ways, we studied the chemiluminescent reactions of F2, F with I2 in the flowing afterglow apparatus. Strong emission spectrum IF(B- X) was firstly observed in the F/I2 system. Simple collision theory was used to estimate the IF(B) vibrational energy relaxation in inert gas. The vibrational population distribution of the excited state IF (B) was measured. Compared the IF (B) vibrational distribution of different systems, we conclude that IF(B) were produced through different reaction mechanisms in the reactions of F2, F with I2. The former proceeds via a secondary, reactive encounter of the F atom with the stable thrialogen intermediate I2F, whearas the latter may be the recombination reaction of spin - orbit excited iodine atoms with ground fluorine atoms.

关 键 词：流动余辉 化学激光介质 化学发光反应 氟 碘 

分 类 号：O613.41[理学—无机化学] O613.44[理学—化学]