کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5375355 1389320 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electronic state spectroscopy of C2Cl4
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Electronic state spectroscopy of C2Cl4
چکیده انگلیسی
The VUV spectrum of C2Cl4 is reported in the energy range 3.8-10.8 eV (325-115 nm). Several photoabsorption features are observed for the first time, including a very weak low-lying band which is provisionally attributed to a π → π∗ triplet transition. Recent ab initio calculations of the molecule's electronic transitions [S. Arulmozhiraja, M. Ehara, H. Nakatsuji, J. Chem. Phys. 129 (2008) 174506] provide the basis for the present assignments below 8.5 eV. An extended ndπ series is proposed to account for several higher-energy Rydberg bands. The identification of vibrational structure, dominated by symmetric CC and CCl2 stretching in excitations from the HOMO, largely agrees with previous spectroscopic studies. The present absolute photoabsorption cross sections cover a wider energy range than the previous measurements and are used to calculate UV photolysis lifetimes of this aeronomic molecule at altitudes between 20 and 50 km.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 365, Issue 3, 26 November 2009, Pages 150-157
نویسندگان
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