کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5395071 1505655 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermochemistry of mono- and disubstituted acetylenes and polyynes at the Gaussian-4 level of theory
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Thermochemistry of mono- and disubstituted acetylenes and polyynes at the Gaussian-4 level of theory
چکیده انگلیسی
Gas phase enthalpies of formation at 298.15 K and 1 atm (ΔfH(g)∘) and adiabatic ionization energies (AIEs) were calculated at the Gaussian-4 (G4) level of theory for a suite of mono- and disubstituted acetylenes and polyynes. ΔfH(g)∘ were estimated for 167 acetylene derivatives, of which only 16 had previously reported experimental values. Of the 122 acetylenes with G4 estimated AIEs, 30 compounds had available experimental characterization for comparison. Excellent agreement with thermochemical accuracy was obtained between G4 ΔfH(g)∘ and AIEs and corresponding high quality experimental data and prior high-level theoretical estimates. The findings extend the existing thermochemical database on this important class of compounds to a range of derivatives without prior high level theoretical calculations or experimental reports.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational and Theoretical Chemistry - Volume 970, Issues 1–3, 1 September 2011, Pages 15-22
نویسندگان
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