کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1410712 1501893 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of the effects of ionic hydrogen bonds (CO−⋯H-C and +N-H⋯−OC) in crystalline dl-proline by ab initio and DFT calculated NQR parameters
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Investigation of the effects of ionic hydrogen bonds (CO−⋯H-C and +N-H⋯−OC) in crystalline dl-proline by ab initio and DFT calculated NQR parameters
چکیده انگلیسی
In this paper, we have calculated the nuclear quadrupole resonance (NQR) parameters of the quadrupole nuclei involved in the hydrogen bonds (CO−⋯H-C and +N-H⋯−OC) in the monomer and pentameric cluster of dl-proline by HF and B3LYP methods and basis sets of 6-311+G∗ and 6-311++G∗∗. These computations are performed on the basis of X-ray diffraction structural data of dl-proline. The results indicate that the calculations including hydrogen-bonding (HB) interactions (in pentamer) are in better agreement with the experimental data than those in which these interactions are neglected (in monomer). The quantum chemical calculations show that the intermolecular hydrogen-bonding interactions play an important role in determination of the NQR parameters of 14N, 2H of NH2+ group and 17O.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 846, Issues 1–3, 26 November 2007, Pages 119-122
نویسندگان
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