کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5391259 | 1505173 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Raman observation of a new (ζ) polymorph of glycine?
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A Raman spectroscopy study has proven, that on increasing hydrostatic pressure up to â¼3 GPa γ-glycine undergoes a phase transition into δ-polymorph, which on decompression down to 0.62 GPa transforms into another form, supposed to be a previously unknown polymorph termed ζ-glycine. The formation of this new form was observed also visually using optical microscopy and is in an agreement with the data from X-ray powder diffraction. On further decompression, δ- and ζ-forms coexisted in the pressure range between 0 and 0.62 GPa. The ζ-form of glycine was preserved at ambient conditions for at least 3 days.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics Letters - Volume 419, Issues 4â6, 26 February 2006, Pages 496-500
Journal: Chemical Physics Letters - Volume 419, Issues 4â6, 26 February 2006, Pages 496-500
نویسندگان
S.V. Goryainov, E.V. Boldyreva, E.N. Kolesnik,