کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1236721 | 968874 | 2006 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polarized vibrational studies of bisguanidinium hydrogenphosphate monohydrate
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Detailed vibrational studies (FTIR and Raman on powder samples, polarized FTIR microscope on a small single crystal, polarized FTIR using Bruker reflection unit on a single crystal and polarized Raman) have been carried out. Vibrational spectra are discussed in relation to the crystal structure published previously. In this crystal a network of hydrogen bonds link water molecules, guanidinium cations and hydrogenphosphate ions. The 13 different hydrogen bonds in G2HP crystal structure are detected. On the basis of detailed vibrational studies the detailed assignment of observed bands was made. Calorimetric (DSC) studies have been performed, but no phase transition was found in the temperature range 100–350 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 64, Issue 1, 1 May 2006, Pages 73–86
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 64, Issue 1, 1 May 2006, Pages 73–86
نویسندگان
M. Drozd, J. Baran,