کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1405716 1501757 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular structure, anharmonic vibrational analysis and electronic spectra of o-, m-, p-iodonitrobenzene using DFT calculations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Molecular structure, anharmonic vibrational analysis and electronic spectra of o-, m-, p-iodonitrobenzene using DFT calculations
چکیده انگلیسی


• PES scan was carried out for o-, m-, p-iodonitrobenzene.
• Anharmonic frequencies are found in excellent agreement with IR experiments.
• Vibrational and electronic spectra were analyzed.

In the present work, molecular geometry and anharmonic vibrational spectra of o-, m-, p-iodonitrobenzene have been studied. The anharmonic frequencies were calculated using second order perturbative (PT2) approach with basis set 3-21G∗ on iodine and 6-311G(d,p) on other atoms at DFT(B3LYP) level of theory and were compared to experimental values. The assignments of vibrational modes of isomeric iodonitrobenzenes were done by using potential energy distribution (PED) and vibrational assignments of benzene, nitrobenzene and iodobenzene. The combination and overtone bands are also assigned. The electronic spectra were recorded as well as simulated using polarizable continuum model (PCM) at TD-B3LYP/6-311G(d,p)/3-21G∗ level of theory. The vibrational and electronic spectra are interpreted. Moreover, atomic charges, MEP mapping, HOMO–LUMO, NBO analysis and various thermodynamics and molecular properties are reported.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1059, 5 February 2014, Pages 239–254
نویسندگان
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