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This book explores one of the most effective physical methods for studying chemical compounds, and provides a treatment of the theory of Raman scattering by molecules and crystals, a description of molecular and crystalline vibrations and an analysis of their symmetry. It also details various effects of phonon absorption and scattering in crystals, characteristics of vibrational bands (wavenumber, bandwidth and intensity), nonlinear and anharmonic effects in vibrational spectra, and a description of Raman spectroscopic techniques. The book will appeal to students and scientists whose interests.
This book explores one of the most effective physical methods for studying chemical compounds, and provides a treatment of the theory of Raman scattering by molecules and crystals, a description of molecular and crystalline vibrations and an analysis of their symmetry. It also details various effects of phonon absorption and scattering in crystals, characteristics of vibrational bands (wavenumber, bandwidth and intensity), nonlinear and anharmonic effects in vibrational spectra, and a description of Raman spectroscopic techniques. The book will appeal to students and scientists whose interests lie in the field of research of chemical, mineralogical, and biological systems.
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Weak chemical interactions, i.e., hydrogen and halogen bonds, underlie the formation of molecular crystals and control their structure. This book provides a description of the properties and characteristics of these interactions, as well as conclusions about their nature, made from measurements of the vibrational (Raman) spectra of a large number of compounds in the temperature range 5 K – 300 K. The diagnostic parameters of hydrogen bonds, i.e., vibration frequency, Raman intensity, band half-width and degree of anharmonicity, are described in detail, for the entire range of bonds, from weak to ultrashort, intra- and intermolecular. The results of the study of vibrational spectra of halogen-halogen bonds are also presented, which allow us to draw a certain conclusion about its nature. The book will appeal to students and scientists whose interests lie in the field of research of chemical compounds, and biological and pharmaceutics systems.
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