کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1250559 970839 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phonon spectra and phonon-dependent properties of AgSO4, an unusual sulfate of divalent silver
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Phonon spectra and phonon-dependent properties of AgSO4, an unusual sulfate of divalent silver
چکیده انگلیسی

Phonon spectra of recently synthesized Ag(II)SO4 have been measured using infrared absorption and Raman scattering spectroscopy, and theoretically predicted using density functional theory calculations. Excellent agreement between experimental and theoretical results with correlation coefficient of 1.05 allowed for full assignment of the experimentally observed vibrational bands, as well as calculation of standard vibrational entropy of AgSO4 (118.2 J mol−1 K−1), vibrational heat capacity at constant volume (99.1 J mol−1 K−1), zero-point energy (48.3 kJ mol−1). The experimental cut-off frequency of the phonon spectrum equals 1116 cm−1 which translates to the Debye temperature of 1606 K. High frequencies of S–O stretching modes render sulfate connections of Ag(II) attractive precursors of high-TC superconductors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vibrational Spectroscopy - Volume 57, Issue 2, November 2011, Pages 334–337
نویسندگان
, , , ,