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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Direct observation of adduct formation of alkyl and aromatic iodides with Cl atoms using cavity ring-down spectroscopy
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Direct observation of adduct formation of alkyl and aromatic iodides with Cl atoms using cavity ring-down spectroscopy

机译：使用腔衰荡光谱法直接观察与Cl原子形成的烷基和芳族碘化物的加合物形成

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摘要

The reactions of Cl atoms with RI (R = n-C3H7, n-C4H9, cyclo-C6H11, C6H5, C6F5, and p-CH3C6H4) have been studied using cavity ring-down spectroscopy at a temperature range of 233-313 K and at 100 Torr total pressure of N-2 diluent. Visible absorption spectra of the RI-Cl adducts were recorded at 440-520 nm at 263 K. The yields of the adducts were temperature-dependent. There was no discernible reaction of the adducts in the presence of 100 Torr of O-2 at 263 K. Theoretical calculations were performed for C4H9I-Cl and C6H5I-Cl for quantitative explanation of the absorption spectra and the strength of the I-Cl bonds in the charge-transfer complexes. Evidence for the adduct formation following the reaction of Cl with C6H5Br was sought but not found at 440 and 520 nm.
机译：使用腔衰荡光谱在233-313 K的温度范围内研究了Cl原子与RI（R = n-C3H7，n-C4H9，环-C6H11，C6H5，C6F5和p-CH3C6H4）的反应在100 Torr的N-2稀释剂总压力下。在263 K下在440-520 nm处记录了RI-Cl加合物的可见吸收光谱。加合物的产率与温度有关。在263 K下，在100 Torr的O-2存在下，加合物没有明显的反应。对C4H9I-Cl和C6H5I-Cl进行了理论计算，定量解释了吸收光谱和I-Cl键的强度在电荷转移复合物中。寻找了在Cl与C 6 H 5 Br反应之后形成加合物的证据，但在440和520nm处未发现。

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