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.
This book presents a detailed look at experimental and computational techniques for accurate structure determination of free molecules. The most fundamental property of a molecule is its structure – it is a prerequisite for determining and understanding most other important properties of molecules. The determination of accurate structures is hampered by a myriad of factors, subjecting the collected data to non-negligible systematic errors. This book explains the origin of these errors and how to mitigate and even avoid them altogether. It features a detailed comparison of the different experimental and computation methods, explaining their interplay and the advantages of their combined use. Armed with this information, the reader will be able to choose the appropriate methods to determine – to a great degree of accuracy – the relevant molecular structure.
Molecular Constants of Asymmetric Top Molecules, Part 3 is a comprehensive collection of data on molecular constants of asymmetric top molecules, critically evaluated by experts.
Volume II/29 "Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy" is planned to appear as a series A, B, C and D1, D2, D3 for the diamagnetic, and E for the paramagnetic linear and polyatomic species, respectively. Like in the preseding volumes II/24 and II/19, which have appeared in the years around 1999 and 1992, respectively, the diamagnetic substances are arranged in the manner suggested by Hill ("Hill's system", 1900), meaning an almost strict alphabetical order. The ionic species are included in the alphabetical arrangement of the neutral ones in each table. The information is grouped differently in comparison with the previous volumes. All relevant properties of a molecule and the corresponding parameters can be found concentrated under its sum formula in volume II/29. this diminishes the need of turning pages because rotational and related constants, dipole moments, barriers to internal rotation, hyperfine coupling parameters, or Zeeman data were hitherto listed in different tables. The present subvolume II/29D2 contains data for asymmetric top molecules.
This is subvolume C of the Landolt-Börnstein Volume II/29 "Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy", which is planned to appear as a series A, B, C and D1 and D2 for the diamagnetic, and E for the paramagnetic linear and polyatomic species, respectively. Like in the preceding volumes II/19 and II/24, which have appeared in 1992 and 1999, the diamagnetic substances are arranged in the manner suggested by Hill ("Hill's system", 1900), meaning an almost strict alphabetical order; details are given in the General Introduction on the following pages. The ionic species are included in the alphabetical arrangement of the neutral ones in each table. In the preface to the previous volume II/24 we had noted: It is somewhat surprising that the trend of reducing spectroscopic activities in universities and other research institutes has not led to a lower production rate of pertinent molecular literature data during the last say ten years. It seems that the opposite is true. The number of studies of Van der Waals complexes is still increasing, and naturally also their complexity. Similarly, the "normal" molecules studied under high-resolution conditions became more complicated and flexible, and interesting effects like inner hydrogen bonding have been investigated. The number of figures used to illustrate the molecular conformational structures is, therefore, also larger than in the foregoing volumes.
This is subvolume D (appearing in three parts, D1, D2, and D3) of the Landolt-Börnstein Volume II/29 “Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy”, which is planned to appear as a series A, B, C, D1, D2, D3 for the diamagnetic, and E for the paramagnetic diatomic and paramagnetic polyatomic species, respectively. Like in the preceding volumes II/24 and II/19, which have appeared in the years around 1999 and 1992, respectively, the diamagnetic substances are arranged in the manner suggested by Hill (“Hill's system”, 1900), meaning an almost strict alphabetical order; details are given in the General Introduction on the following pages. The ionic species are included in the alphabetical arrangement of the neutral ones in each table. In the preface to the previous volume II/24 we had noted: It is somewhat surprising that the trend of reducing spectroscopic activities in universities and other research institutes has not led to a lower production rate of pertinent molecular literature data during the last say ten years. It seems that the opposite is true. The number of studies of Van der Waals complexes is still increasing, and naturally also their complexity. Similarly, the “normal” molecules studied under high-resolution conditions became more complicated and flexible, and interesting effects like inner hydrogen bonding have been investigated. The number of figures used to illustrate the molecular conformational structures is, therefore, also larger than in the foregoing volumes.
Volume II/19 Molecular Constants mostly from Microwave, Molecular Beam and Sub-Doppler Laser Spectroscopy is a supplement to the earlier volumes II/4, II/6, and II/14. The slight change in the title reflects current trends in the applications of spectroscopic methods. Together, the four volumes collect all the critically evaluated data published up to 1989/90 on constants of free molecules obtained by classical and modern spectroscopy. Volume II/19 is divided into four parts to record the growing number of investigations, especially in the microwave and millimeter wave regions, where modern techniques like Fourier Transform Microwave Spectroscopy have made new objects of interest such as molecular complexes and clusters accessible to study. Subvolume II/19a contains a general introduction and tables of rotational and centrifugal distortion constants of diamagnetic, diatomic, linear and symmetric top molecules, which specify the frequences of the rotational transitions of these types of rotor. Subvolume II/19b contains corresponding data on diamagnetic asymmetric top molecules. Subvolume II/19c contains tables for diamagnetic molecules giving further spectroscopic parameters: quadrupole coupling constants, potential barriers, and data from Stark and Zeeman effect measurements. Subvolume II/19d presents high resolution spectroscopic results for freely rotating paramagnetic and ionic molecular species. The basic organization and arrangement of the tables is the same as in the previous volumes so that readers familiar with previous volumes may have easy access to desired information. The order of molecules within each table, however, has been changed to agree with the system introduced by Hill in 1900. Except for the special cases of C and H, this is based on an alphabetical listing of the atoms in the molecular sum formula, as explained in the introduction. This ordering, based on Hill's system, reduces the importance of the global index of substances, an indispensable part of all previous volumes. For completeness, an index of substances is included at the end of Subvolume II/19d.
Volume II/29 "Molecular Constants Mostly from Microwave, Molecular Beam, and Sub-Doppler Laser Spectroscopy" is planned to appear as a series A, B, C and D1, D2, D3 for the diamagnetic, and E for the paramagnetic linear and polyatomic species, respectively. Like in the preseding volumes II/24 and II/19, which have appeared in the years around 1999 and 1992, respectively, the diamagnetic substances are arranged in the manner suggested by Hill ("Hill's system", 1900), meaning an almost strict alphabetical order. The ionic species are included in the alphabetical arrangement of the neutral ones in each table. The information is grouped differently in comparison with the previous volumes. All relevant properties of a molecule and the corresponding parameters can be found concentrated under its sum formula in volume II/29. this diminishes the need of turning pages because rotational and related constants, dipole moments, barriers to internal rotation, hyperfine coupling parameters, or Zeeman data were hitherto listed in different tables. The present subvolume II/29D2 contains data for asymmetric top molecules.
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.
This book presents a detailed look at experimental and computational techniques for accurate structure determination of free molecules. The most fundamental property of a molecule is its structure – it is a prerequisite for determining and understanding most other important properties of molecules. The determination of accurate structures is hampered by a myriad of factors, subjecting the collected data to non-negligible systematic errors. This book explains the origin of these errors and how to mitigate and even avoid them altogether. It features a detailed comparison of the different experimental and computation methods, explaining their interplay and the advantages of their combined use. Armed with this information, the reader will be able to choose the appropriate methods to determine – to a great degree of accuracy – the relevant molecular structure.
This volume is the first in a series dedicated to the important contributions of Prof. Georges-Jean Pinault to Indo-Aryan studies. The book gathers over twenty of his significant publications on Vedic linguistics and etymological problems, both in French and English. It includes complex issues and detailed discussions about phonetics and morphology of both Old Indo-Aryan and Indo-Iranian languages and deals with the etymology of prominent theonyms. It will be of utmost interest to anyone interested in the history of Indo-Aryan languages, Vedic poetics, Indian culture and Proto-Indo-European comparative linguistics.
Jean-Loup Amselle explores the issue of multiculturalism by delving into the history of France's confrontation with ethnic difference. Amselle analyzes France's relationship to Egypt, Algeria, and Senegal to show how ideas about difference and assimilation played out in French colonial policies and how these same tensions continue to be problematic as France grapples with cultural pluralism. Amselle's book has timely and wide-ranging implications. Arguing against the "liberal communitarian state" as it exists in the United States, Amselle contends that an overemphasis on difference can lead to what he calls "affirmative exclusion"--the flip side of affirmative action. The recognition of a multiplicity of ethnic groups in France, he asserts, creates an environment that fosters racism. "Despite an outward appearance of generosity, supporters of French-style multiculturalism, by promoting 'affirmative action,' run the risk of creating as many difficulties as there are 'target groups,' which they have helped identify and hence produce." Calling on theories of racial difference devised by early anthropologists--most notably, Louis Faidherbe--and on the work of political philosophers such as Thomas Hobbes, John Locke, and Jean-Jacques Rousseau, Amselle makes historical and sociological sense of the debates over multiculturalism and the violence they engender. Toward a French Multiculturalism proposes directions for the future.
This insightful book is by far the broadest examination of traditional Cajun culture ever assembled. It goes beyond the stereotypes and surface treatment given to Cajuns by the popular media and examines the great variety of cultural elements alive in Cajun culture today--cooking, music, storytelling, architecture, arts and crafts, and festivals, as well as traditional occupations such as fishing, hunting, and trapping. It not only gives fascinating descriptions of elements in Cajun life that have been woven into the fabric of American history and folklore; it also explains how they came to be. Cajun Country reveals the historical background of the Cajun people, who migrated to Louisiana as exiles from their Canadian homeland, and it shows their folklife as a living and ongoing legacy that enriches America.
in 1923/24 Henry Frugès, a Bordeaux industrialist commissioned Le Corbusier and Pierre Jeanneret with a "small workers housing estate" in Lège and a garden city in Pessac, comprising 130 to 150 houses with shops. These two housing schemes fitted neatly into the architects research on standardisation and the "machine à habiter", and provided a useful laboratory for gauging public opinion with regard to mass-production techniques in housing estates. One of the most striking features of the Cité Frugès was the use of polychromy on the exterior facades, to, in Le Corbusier's own words, "sculpt the space through the physical quality of colour - bring forward some volumes while making others recede. In short, compose with colour in the same way as we have composed with form. This is how architecture is transformed into urbanism." Historical documents and drawings make this handy-sized volume an invaluable guide for visitors and a practical introduction for all architectural enthusiasts.
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