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Author: Herman Szymanski
Publisher: Springer Science & Business Media
ISBN: 1468472968
Category : Science
Languages : en
Pages : 446
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Book Description
With the development in recent years of NMR spectrometers capable of recording with a minimum of effort data that are both accurate and reproducible, a need has arisen for spectra catalogs and data books to aid the researcher. The ability to correlate a spectrum to a precalibrated chart accurately (to within 0. 02 ppm) has made chemical shift, along with the character of the spectral lines produced, an increasingly important tool in configurational analysis-a tool which this book is designed to complement. It is known that the chemical shift of a proton can be influenced by atoms as much as five or six carbons away, a fact of great importance to compound identification. The entries in this book, arranged according to proton environment, enable the researcher with a hypo thetical structure already proposed for his unknown quickly to locate examples of compounds having similar structures. An index of molecular formulas and a shift index, which should prove useful in hypothesizing alternate structures for the unknown and in checking out the hypotheses, have also been provided. The data collected represent some 4800 shifts from the spectra of about 1200 compounds that appear in the catalogs of Varian Associates, Sadtler Research Laboratories, and the American Petroleum Institute, whose cooperation is gratefully acknowledged. The alphanumerical code that is the basis of our presentation, and the explanation of its use, are borrowed intact from the NMR Spectra Catalog of Varian Associates, for whose permission to use this material we are especially grateful.
Author: Herman Szymanski
Publisher: Springer Science & Business Media
ISBN: 1468472968
Category : Science
Languages : en
Pages : 446
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Book Description
With the development in recent years of NMR spectrometers capable of recording with a minimum of effort data that are both accurate and reproducible, a need has arisen for spectra catalogs and data books to aid the researcher. The ability to correlate a spectrum to a precalibrated chart accurately (to within 0. 02 ppm) has made chemical shift, along with the character of the spectral lines produced, an increasingly important tool in configurational analysis-a tool which this book is designed to complement. It is known that the chemical shift of a proton can be influenced by atoms as much as five or six carbons away, a fact of great importance to compound identification. The entries in this book, arranged according to proton environment, enable the researcher with a hypo thetical structure already proposed for his unknown quickly to locate examples of compounds having similar structures. An index of molecular formulas and a shift index, which should prove useful in hypothesizing alternate structures for the unknown and in checking out the hypotheses, have also been provided. The data collected represent some 4800 shifts from the spectra of about 1200 compounds that appear in the catalogs of Varian Associates, Sadtler Research Laboratories, and the American Petroleum Institute, whose cooperation is gratefully acknowledged. The alphanumerical code that is the basis of our presentation, and the explanation of its use, are borrowed intact from the NMR Spectra Catalog of Varian Associates, for whose permission to use this material we are especially grateful.
Author: Herman A. Szymanski
Publisher:
ISBN: 9781468472974
Category : Gardening
Languages : en
Pages : 0
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Book Description
Introduction; Proton code index; Molecular formula index; Shift index.
Author: Theodore Rochow
Publisher: Springer Science & Business Media
ISBN: 1468407511
Category : Technology & Engineering
Languages : en
Pages : 199
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Book Description
Resinography is a strange new word to many people. Like all scientific terms, it is a word coined for a specific purpose: to indicate (in this case) that resins, polymers, and plastics write their own history on the molecular and other structural levels. The word indicates further that anyone trained and equipped to ask the right questions (by means of instruments and techniques) will be able to read that history. That person must have sufficient training and experience to interpret the answers, of course, and he or she needs to have the temperament of a detective. But in the end, as readers of this book will discover, one is able to identify the material, to determine its history of treatment, and to learn much about its possible field of usefulness. Obviously, the resinographer seeks to do the same thing with res ins, polymers, and plastics that the metallographer does with metals and their alloys. Often the investigative techniques and the instru ments, too, are similar, but sometimes they are decidedly different. Perhaps it would be best to say that resinography and metallographyl (and petrography as well) share a common origin, and that origin is deeply rooted in microscopy. The "grandfather" of all three "ographies" was Henry Clifton Sorby (1826-1908),2 who initiated 3 metallography and petrography, and was the first to report on the microstructure of a resin (amber, a natural fossil resin).
Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 656
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Book Description
First multi-year cumulation covers six years: 1965-70.
Author: Alfred James Moses
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1320
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Book Description
"Comprehensive source of materials, property data for practicing physicists, chemists, engineers and designers."--Pref. The introduction contains information on threshold limit values for chemical substances and physical agents in the work environment. Contents include physical, mechanical, chemical, thermal and thermodynamic, electrical and electronic, magnetic, acoustic and optical properties of materials; nuclear radiation and radiation effects; properties of elements, organic compounds, inorganic compounds, alloys, glasses and ceramics, composites, polymers and adhesives, semiconductors, superconductors, environment and miscellaneous materials. Appendix A ia a list of registered trademarks. Appendix B is a table of isotopes. Indexed. Published 1978.
Author: Arnold J. Gordon
Publisher: John Wiley & Sons
ISBN: 0471315907
Category : Science
Languages : en
Pages : 566
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Book Description
Here in one source is a wide variety of practical, everydayinformation often required by chemists but seldom found together,if at all, in the standard handbooks, data collections, manuals,and other usual sources. Discussing physical, chemical, andmechanical properties of substances and systems, the authors answersuch questions as: * How do I test for and destroy peroxides in different solventsand what is the best way to purify such solvents? * What are the structure, physical properties, and recentreferences to the use of common-name solvents and solvent aids suchas the "Skellysolves," "Cellosolves," "Crownanes," and"Glymes"? * What is the utility of a particular molecular sieve, orpermeation gel, or epoxy cement, or liquid crystal, and where do Ibuy them and find references to their application? The book is divided into nine chapters and covers properties ofatoms and molecules, spectroscopy, photochemistry, chromatography,kinetics and thermodynamics, various experimental techniques, andmathematical and numerical information, including the definitions,values, and usage rules of the newly adopted International Systemof Units (SI Units). A section on statistical treatment of datawhich provides an actual least-squares computer program is alsoincluded. In the spectroscopy chapter, very extensive andup-to-date collections of spectral correlation data are presentedfor ir, uv-vis, optical rotation, nmr, and mass spectra, along withdata on esr and nqr spectroscopy. Also included is a variety ofhard-to-classify but frequently sought information, such as namesand addresses of microanalysis companies and chemistry publishers,descriptions and commercial sources of atomic and molecular models,and safety data for hazardous chemicals. More than 500 keyreferences are also included, most of which are recent. There areimportant hints and definitions associated with the art as well asthe state of the art for the appropriate subjects. Also foundthroughout the book are about 250 suppliers and directions forobtaining special booklets or other material. Containing a wealth of useful information, The Chemist'sCompanion will be an indispensable guide for students andprofessional chemists in nearly all the chemical disciplines. Inaddition, it will provide for the teacher and student an unusualadjunct for use in a broad cross-section of chemistry courses.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 786
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Book Description
Author: Nugent Chamberlain
Publisher: Springer Science & Business Media
ISBN: 1475714750
Category : Science
Languages : en
Pages : 435
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Book Description
I. GENERAL When a sample containing hydrogen is placed in the Although it is assumed that the reader has been exposed static magnetic field, each hydrogen nucleus will precess to the elementary theory of NMR and to the operation at a frequency determined by the magnetic field it of an NMR spectrometer, a brief review of some of the actually experiences. This field, in turn, is determined by basic concepts and definitions will indicate the point of the electronic, and therefore the chemical, environment view used in this book and clarify some of the defini of the nucleus. Thus the variety of chemical environ tions. The discussion is confined to the hydrogen-l iso ments that exist in a molecule will produce a spectrum tope because this is by far the most generally used and, of precession frequencies that will indicate the chemical consequently, far more data are available for it than for nature of the various parts of the molecule. The remain any other isotope. This wealth of data, in turn, leads to ing problem is to observe this spectrum of frequencies. the most accurate and comprehensive set of spectra There are two general methods of observing the structure correlations. spectrum.
Author: United States. Environmental Protection Agency. Library Systems Branch
Publisher:
ISBN:
Category : Environmental protection
Languages : en
Pages : 702
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Book Description
Author: Tony Stankus
Publisher: Routledge
ISBN: 1000755118
Category : Language Arts & Disciplines
Languages : en
Pages : 285
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Book Description
This book, first published in 1991, is an invaluable guide to biographies of scientists from a wide variety of scientific fields. The books selected for this highly descriptive bibliography help librarians shatter readers’ stereotypes of scientists as monomaniacal and uninteresting people by providing interesting and provocative titles to capture the interest of students and other readers. The biographies included in this very special bibliography were carefully selected for their humour and human insights to give future scientists encouragement, inspiration, and an understanding of the origins of particular scientific fields. These biographies are unique in that they explore the whole personality of the scientist, giving students a glimpse at the variety and drama of the lives beyond well-known contributions or Nobel prize accomplishments.
