Matrix isolation, spectroscopic characterization, and photoisomerization of m-xylylene.
Matrix isolation, spectroscopic characterization, and photoisomerization of m-xylylene.
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间二甲苯的基质分离、光谱表征和光异构化。
DOI：
10.1021/ja073453d
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发表时间：
2008
影响因子：
15
通讯作者：
W. Sander
中科院分区：
文献类型：
--
作者：
Patrik Neuhaus;Dirk Grote;W. Sander
报道了一种新的高效合成间二甲苯的方法。通过红外光谱、紫外-可见光谱和电子顺磁共振光谱对双自由基1在10K时被捕获在Ar基质中进行了表征。以前报道的合成方法只允许在有机玻璃中生成1，3，6-二甲基-4-羟基-4-羟基-4-羟基-4-羟基-4-甲基-4-酮，光谱鉴定仅限于荧光光谱和EPR光谱。结果表明，二自由基1具有很强的光敏性，辐照后可生成3种异构烃7、9和11，通过红外光谱和密度泛函理论计算结果的比较可以确定它们的存在。
A new efficient synthesis of m-xylylene 1 is reported. The diradical 1 was trapped in argon matrices at 10 K and characterized by IR, UV-vis, and EPR spectroscopy. The syntheses reported before only allowed generation of 1 in organic glasses, and the spectroscopic identification was limited to fluorescence and EPR spectroscopy. Diradical 1 proved to be highly photolabile, and irradiation results in the formation of three isomeric hydrocarbons 7, 9, and 11 which could be identified by comparison of their IR spectra with the results of DFT calculations.