Rotational Spectra and Molecular Structure

Author: James E. Wollrab
Publisher: Academic Press
ISBN: 148319485X
Format: PDF, ePub, Docs
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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.

Structure of Molecules and Internal Rotation

Author: San-Ichiro Mizushima
Publisher: Academic Press
ISBN: 1483194833
Format: PDF, Kindle
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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.

Vibration rotational Spectroscopy and Molecular Dynamics

Author: Du?an Papou?ek
Publisher: World Scientific
ISBN: 9789810216351
Format: PDF, Kindle
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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.

Physical surfaces

Author: J.J. Bikerman
Publisher: Elsevier
ISBN: 0323163041
Format: PDF, ePub
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Physical Surfaces deals with the basic concepts of the physics of surfaces, including the nature of the surface pressure of unimolecular films and the equilibrium pressure of these films. The effect of particle size on capillary pressure, the surface energy and the cuticular energy of solids, and the fundamentals of wetting are also examined. This book is comprised of nine chapters and begins with a discussion on the mechanics and physical chemistry of liquid surfaces, with emphasis on capillarity and surface tension. The following chapters focus on liquid-liquid interfaces, foams and emulsions, and solid surfaces. Interfacial tension is analyzed in relation to miscibility and surface tension, along with contact angles in gas-liquid-liquid systems. The chapter on wetting looks at theories of contact angle, its measurement, and hysteresis. Adsorption and electric surface phenomena are also explored, together with adhesion and friction. This monograph will be a valuable resource for physical chemists and physicists.

Symmetry of Many Electron Systems

Author: I. G. Kaplan
Publisher: Academic Press
ISBN: 1483191737
Format: PDF, Docs
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Symmetry of Many-Electron Systems discusses the group-theoretical methods applied to physical and chemical problems. Group theory allows an individual to analyze qualitatively the elements of a certain system in scope. The text evaluates the characteristics of the Schrodinger equations. It is proved that some groups of continuous transformation from the Lie groups are useful in identifying conditions and in developing wavefunctions. A section of the book is devoted to the utilization of group-theoretical methods in quantal calculations on many-electron systems. The focus is on the use of group-theoretical methods to the classification and calculation of states of molecule. A chapter of the book gives a comprehensive discussion of the fractional parentage method. This application is used in atomic and nuclear spectroscopy. The method of employing coordinate wave functions is explained. The standard Young-Yamanouchi orthogonal representation is presented completely. The book will provide useful guides for physicists, chemists, engineers, students, and researchers in the field of physics.

The Vibrational and Rotational Spectrometry of Diatomic Molecules

Author: John F. Ogilvie
Format: PDF
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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