Download and read online Rotational Spectra and Molecular Structure in PDF and EPUB Physical Chemistry, A Series of Monographs: Rotational Spectra and Molecular Structure covers the energy levels and rotational transitions. This book is divided into nine chapters that evaluate the rigid asymmetric top molecules and the nuclear spin statistics for asymmetric tops. Some of the topics covered in the book are the asymmetric rotor functions; rotational transition intensities; classes of molecules; nuclear spin statistics for linear molecules and symmetric tops; and classical appearance of centrifugal and coriolis forces. Other chapters deal with the energy levels and effects of centrifugal distortion, as well as the internuclear distance and moments of inertia. The discussion then shifts to the coriolis coupling effects on rotational constants and the perturbation treatment of vibration-rotational Hamiltonian. The last chapter is devoted to the examination of origin of the quadrupole interaction. The book can provide useful information to chemists, physicists, electrical engineers, students, and researchers.
Download and read online Vibration rotational Spectroscopy and Molecular Dynamics in PDF and EPUB The book reviews the results of vibration-rotational spectroscopy of molecules obtained recently by combining modern computational methods of quantum chemistry with the new techniques of high-resolution rotational and vibration-rotational spectroscopy. It shows for example that the tunneling vibration-rotational spectroscopy of the van der Waals complexes provides a new look at intermolecular forces while the high precision and sensitivity of the submillimeter-wave and Fourier transform microwave spectroscopy make it possible to study complex rotational spectra of molecules in excited vibrational states. New results of high level ab initio quantum chemical computations of vibrational and rotational energy levels and dipole moment functions of unusual molecules will be discussed together with the recent discovery of clustering of energy levels in asymmetric tops. Group theoretical analysis of floppy molecules, especially the tunneling effects in nonrigid molecules, will also be discussed.
Download and read online Structure of Molecules and Internal Rotation in PDF and EPUB Structure of Molecules and Internal Rotation reviews early studies on dihalogenoethanes. This book is organized into two parts encompassing 8 chapters that evaluate the Raman effect in ethane derivatives, the energy difference between rotational isomers, and the infrared absorption of ethane derivatives. Some of the topics covered in the book are the potential barrier to internal rotation; nature of the hindering potential; entropy difference between the rotational isomers; internal rotation in butane, pentane, and hexane; and internal rotation in long chain n-paraffins. Other chapters deal with the configuration of a polypeptide chain, as well as the sum rule and the product rule for rotational isomers. The normal vibrations of the 1,2-dihalogenoethanes are presented. The last chapters are devoted to the examination of the Raman effect, dielectric constant, and electron diffraction. The book can provide useful information to chemists, physicists, students, and researchers.
Download and read online The Vibrational and Rotational Spectrometry of Diatomic Molecules in PDF and EPUB This work is a systematic description of the analysis of molecular spectra of diatomic molecules, particularly infrared and Raman spectra, to extract precise information about molecular structure and electric and magnetic properties. A number of subjects are covered in depth, with reviews of miscellaneous topics important in the future progress of experiment and theory in this field. Because of its coverage and scope in relation to physical chemistry and molecular physics, this work serves as a useful reference for all researchers in chemistry, physics, spectroscopy, and related fields. Key Features * Explains the empirical basis of spectra, providing many equations useful to generate spectral parameters * Provides a concise review of general principles and detailed explanation of particular theoretical techniques * Analyzes wavenumber data * Contains methods to evaluate parameters in various radial functions * Presents an analysis of intensity of spectra * Covers the effects of nuclear spin, electronic spin, and orbital angular momentum of diatomic free radicals and molecular ions * Illustrates the operation of diatomic lasers on vibrational-rotational transitions
Download and read online Theory of Unimolecular Reactions in PDF and EPUB Theory of Unimolecular Reactions provides a comprehensive analysis of the theory of unimolecular reactions, also known to kineticists as the Rice-Marcus or the Rice-Ramsperger-Kassel-Marcus theory, and to those working in mass spectrometry and related fields as the quasi-equilibrium theory or the theory of mass spectra. This book demonstrates how theoretical parameters are related to experimental observables and describes the methods that are used to obtain useful numerical answers. This monograph consists of 11 chapters and begins by explaining the derivation of the expression for the basic rate k(E), with emphasis on the unimolecular rate constant, intramolecular energy transfer, and potential energy surfaces in unimolecular reactions. The statistical calculation of unimolecular rate under vibrational potential is also given, along with pertinent degrees of freedom. The remaining chapters explore the energy distribution functions appropriate to each system, the averaging of k(E), and the relations between theoretical and experimental parameters. Thermal reactions, chemical activation systems, and the theory of mass spectra are examined. The last chapter is devoted to the transition state and its ambiguities. This text will be of interest to gas kineticists, mass spectrometrists, and students and researchers working in the field of physical chemistry.
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Download and read online The Chromatography of Steroids in PDF and EPUB The Chromatography of Steroids details the fundamental concepts and underlying principles of laboratory techniques utilized in separating steroid mixtures. The text first covers the basic theory of chromatography, and then proceeds to tackling the chromatographic separation of steroids. Next, the selection details the techniques and apparatus employed in chromatography of steroids. Chapter IV talks about the colorimetric and radioisotopic techniques, while Chapter V deals with the structural analysis and identification of steroids by chromatography. The text also coves the typical analytical problems of steroid biochemistry. The book will be of great use to researchers who utilizes chromatographic methods in their work with steroids.
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Download and read online Light Absorption in Sea Water in PDF and EPUB This book provides a detailed description of light absorption and absorbents in seawaters with respect to provenance, region of the sea, depth of the occurrence and trophicity. The text is based on a substantial body of contemporary research results taken from the subject literature (over 400 references) and the work of the authors over a period of 30 years.