Structure Of Molecules And Internal Rotation

Author : San-Ichiro Mizushima
Publisher : Academic Press
Page : 255 pages
File Size : 50,8 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483194837

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Structure of Molecules and Internal Rotation by San-Ichiro Mizushima Pdf

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.

Author : San-Ichiro Mizushima
Publisher : Unknown
Page : 244 pages
File Size : 41,5 Mb
Release : 1968
Category : Electronic
ISBN : OCLC:500659602

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Structure of Molecules and Internal Rotation by San-Ichiro Mizushima Pdf

Author : Sanʼichirō Mizushima
Publisher : Unknown
Page : 0 pages
File Size : 49,5 Mb
Release : 1954
Category : Molecules
ISBN : LCCN:54110548

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Structure of Molecules and Internal Rotation by Sanʼichirō Mizushima Pdf

Author : San-Ichiro Mizushima
Publisher : Hassell Street Press
Page : 264 pages
File Size : 54,5 Mb
Release : 2021-09-09
Category : Electronic
ISBN : 1014877679

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Structure Of Molecules And Internal Rotation by San-Ichiro Mizushima Pdf

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author : San-Ichiro Mizushima
Publisher : Unknown
Page : 128 pages
File Size : 49,8 Mb
Release : 2013
Category : Electronic
ISBN : 1483167356

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Structure of Molecules and Internal Rotation by San-Ichiro Mizushima Pdf

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 wi ...

Author : David G. Lister,John N. Macdonald,Noel L. Owen
Publisher : Unknown
Page : 268 pages
File Size : 49,9 Mb
Release : 1978
Category : Science
ISBN : UCAL:B4477736

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Internal Rotation and Inversion by David G. Lister,John N. Macdonald,Noel L. Owen Pdf

Author : Mavis Redshaw
Publisher : John Wiley & Sons
Page : 644 pages
File Size : 54,7 Mb
Release : 1974
Category : Science
ISBN : UOM:39015016003330

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Internal Rotation in Molecules by Mavis Redshaw Pdf

Author : James E. Wollrab
Publisher : Academic Press
Page : 485 pages
File Size : 50,7 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483194851

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Rotational Spectra and Molecular Structure by James E. Wollrab Pdf

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.

Author : San-Ichiro Mizushima
Publisher : Elsevier
Page : 255 pages
File Size : 43,7 Mb
Release : 2013-09-03
Category : Science
ISBN : 9781483261645

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Structure of Molecules and Internal Rotation by San-Ichiro Mizushima Pdf

Structure of Molecules and Internal Rotation focuses on the processes, methodologies, and reactions involved in internal rotation. The manuscript first offers information on studies on dihalogenoethanes, as well as the spectroscopic and thermal measurements of ethane and its derivatives. Discussions focus on the dielectric constant of halogenoethanes, electron diffraction, Raman effect in ethane derivatives, and entropy difference between rotational isomers. The text also ponders on internal rotation in simple molecules and paraffinic hydrocarbons. The publication examines polypeptides and related compounds and the principles and experimental methods of structure determination. Topics include Raman effect, infrared absorption, molecules with two peptide bonds, and the configuration of a polypeptide chain. The manuscript is a valuable source of data for chemists and readers interested in the structure of molecules and internal rotation.

Author : Carlo di Lauro
Publisher : Newnes
Page : 345 pages
File Size : 41,8 Mb
Release : 2013-04-27
Category : Science
ISBN : 9780124078932

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Rotational Structure in Molecular Infrared Spectra by Carlo di Lauro Pdf

Recent advances in infrared molecular spectroscopy have resulted in sophisticated theoretical and laboratory methods that are difficult to grasp without a solid understanding of the basic principles and underlying theory of vibration-rotation absorption spectroscopy. Rotational Structure in Molecular Infrared Spectra fills the gap between these recent, complex topics and the most elementary methods in the field of rotational structure in the infrared spectra of gaseous molecules. There is an increasing need for people with the skills and knowledge to interpret vibration-rotation spectra in many scientific disciplines, including applications in atmospheric and planetary research. Consequently, the basic principles of vibration-rotation absorption spectroscopy are addressed for contemporary applications. In addition to covering operational quantum mechanical methods, spherical tensor algebra, and group theoretical methods applied to molecular symmetry, attention is also given to phase conventions and their effects on the values of matrix elements. Designed for researchers and PhD students involved in the interpretation of vibration-rotation spectra, the book intentionally separates basic theoretical arguments (in the appendices), allowing readers who are mainly concerned with applications to skip the principles while at the same time providing a sound theoretical basis for readers who are looking for more foundational information. Reviews basic theory and contemporary methods of vibration rotation absorption spectroscopy, including operational quantum mechanical methods, spherical tensor algebra, and group theoretical methods applied to molecular symmetry Covers sophisticated mathematical topics in simple, easy-to-read language Discusses methods and applications separately from basic theoretical arguments for quick reference

Author : J. Laane,Marwan Dakkouri,Ben van der Veken,Heinz Oberhammer
Publisher : Springer Science & Business Media
Page : 640 pages
File Size : 51,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401120746

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Structures and Conformations of Non-Rigid Molecules by J. Laane,Marwan Dakkouri,Ben van der Veken,Heinz Oberhammer Pdf

From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.

Author : G. S. Ezra
Publisher : Springer Science & Business Media
Page : 212 pages
File Size : 42,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642931970

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Symmetry Properties of Molecules by G. S. Ezra Pdf

The aIm of the present article is to give a critical exposition of the theory of the symmetry properties of rigid and nonrigid molecules. Despite the fact that several accounts of the subject, both technical and didactic, are now available, and despite the extensive discussion of nonrigid molecule symmetry that has been going on since the classic papers of Hougen and Longuet-Higgins, there remains a need for a unifying survey of the problem. Previous treatments have tended to emphasize one or the other particular viewpoint at the expense of a broader view. Renewed interest in the details of the symmetry classification of rotation vibration states of highly symmetric (octahedral) molecules has led to a reexam ination of the relation between conventional point group operations and permutations of identical nuclei in rigid molecules, together with a clarification of the fundamental role of the Eckart constraints and associated Eckart frame. As is shown below, analogous insights can also be obtained in the case of nonrigid molecule symmetry, where the Eckart-Sayvetz conditions provide a natural generalization of the Eckart constraints. The importance of particular definitions of the 'molecule-fixed' frame in the theory of molecular symmetry can be better appreciated by examining their dynamical origin. Chapter 1 is therefore devoted to a description of the derivation of the usual Wilson-Howard-Watson form of the molecular Hamiltonian, together with its generalization to nonrigid molecules. Particular attention is given to the intro duction of molecular models and use of the Eckart and Eckart-Sayvetz constraints.

Author : Kenneth S. Pitzer
Publisher : World Scientific
Page : 537 pages
File Size : 55,9 Mb
Release : 1993
Category : Science
ISBN : 9789810214395

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Molecular Structure and Statistical Thermodynamics by Kenneth S. Pitzer Pdf

In the course of his distinguished career of over 55 years, Kenneth S Pitzer published over 360 scientific papers. Included in this volume are 72 papers, selected for their historical importance and continuing significance. In early work, where spectroscopic data were incomplete or, later on, where the systems of interest were so complex that a deductive solution from molecular information was impractical, Pitzer interrelated molecular structural information, statistical methods and thermodynamic measurements to advance the understanding of molecular systems. This volume considers all three aspects and, by putting together selected papers, highlights the cohesiveness of certain advances through time and development. Several papers from journals not widely circulated can also be found in this selection of papers.

Author : Alfons Weber
Publisher : Springer Science & Business Media
Page : 623 pages
File Size : 41,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400939691

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Structure and Dynamics of Weakly Bound Molecular Complexes by Alfons Weber Pdf

The study of weakly bound molecular complexes has in recent years brought this field of investigation to the forefront of physical and chemical research. The scope of the subject is wide and different terminology and nomenclature is current among the various subspecialties. Thus, the term "metal cluster" often connotes to the organic chemist a metal-organic compound, while the physicist will more likely think of groups of metal atoms held together by weak interatomic forces. Aggregates, clusters, complexes, van der Waals molecules, hydrogen-bonded molecules, etc. are terms currently in use, sometimes interchangeably while other times with well defined and mutually exclusive meanings. The subjects of this volume are the free, isolated vim der Waals and hydrogen-bonded molecules. Owing to the present state of experimental knowledge these are mostly dimers, i. e. , entities formed by two strongly bound molecules, an atom and a molecule, or two atoms held together by the weak hydrogen-bonding, or the still weaker van der Waals forces. Weakly bound complexes formed of more than two strongly bound sub-units, i. e. , trimers, tetramers, etc. , are now coming within reachof experimental observation and several papers in this book deal with them. The study of van der Waals and hydrogen-bonded interactions has been pursued for several decades. Most of these ,investigations have, however, dealt with systems in the condensed phase in which bulk effects are commingled with and therefore mask the weak binary interactions.

Author : Natalja Vogt,Jean Demaison
Publisher : Springer Nature
Page : 482 pages
File Size : 50,7 Mb
Release : 2023-12-06
Category : Science
ISBN : 9783031360459

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Equilibrium Structure of Free Molecules by Natalja Vogt,Jean Demaison Pdf

The properties of chemical, pharmaceutical, and biological compounds depend mainly on their molecular structure, whose determination is of fundamental interest. This book examines and systematizes more than three hundred striking structural determinations of free molecules. Featuring high-quality structural data and presenting modern techniques of their determinations by quantum chemistry, high-resolution spectroscopy and electron diffraction, the book is an indispensable resource for graduate students and professional scientists specializing in structural chemistry and other related fields.