Author: Michael Louis Lesiecki
Publisher:
ISBN:
Category : Spectrum analysis
Languages : en
Pages : 306

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Author: R. A. Gomme
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: A. Barnes
Publisher: Springer Science & Business Media
ISBN: 9400985401
Category : Science
Languages : en
Pages : 602

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Book Description
The matrix isolation (MI) method has now been used for nearly thirty years. During this period it has been actively developed and the range of problems tackled greatly extended. Originally it was used for studies of transient species involv ing vibrational, electronic and ESR spectroscopy. Nowadays the study of transient species forms a comparatively small part of HI work since it has been amply demonstrated that very fruitful information can be obtained of the structure and interactions of stable molecules and their aggregates. In addition to the s~ectroscopic methods mentioned above the MI technique is nowadays a standard method in research based on vibrational relaxation, luminescence, Mossbauer, magnetic circular dichroism, pulsed NMR and photoelectron spectroscopy. The matrix isolation technique affords considerable advantages over more conventional methods in most applications of spectroscopy. Areas where the technique has been widely applied, or shows great potential, include: metal atom chemistry, and its relation to surface chemistry, high temperature inorganic species, transition metal complexes, interstellar species, free radicals and unstable molecules, conformational studies, molecular com plexes, and intermolecular forces.

Author: Milton J. Linevsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 45

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The techniques of matrix isolation were used to obtain the infrared spectra of several high temperature molecules. An injector Knudsen cell was added to the general methods of matrix isolation resulting in further versatility of the method. Spectra of species produced by the reaction of a condensed phase and gas phase can now be studied. The following molecules were studied: HBO2, BOCl, BOF, FeF2, CrF2, CrF3, CrCl2 and LiOH. In most cases tentative frequency assignments were made and structural properties inferred. Atomic resonance line absorption studies were carried out on AlN. The heat of formation at 298K was found to be -71 8 plus or minus 2 kcal/mole based on the observed vapor pressures. (Author).

Author: Matthew John Almond
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 552

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Book Description
Intended as a standard reference in the subject of matrix isolation spectroscopy. Leads the reader logically through experimental techniques, physical processes in matrices, photochemistry in matrices, low energy species and interconversions, high-energy species, atoms and small clusters, astrochemistry and atmospheric processes. Also, a unique feature is a detailed compilation of the results of matrix-isolation experiments in the decade of 1977-1986.

Author:
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 854

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Author: Kari Vaskonen
Publisher:
ISBN: 9789513917364
Category :
Languages : en
Pages : 65

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Author: S. Dickinson
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Trevor Neil Day
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Rui Fausto
Publisher: Springer Science & Business Media
ISBN: 9400902816
Category : Science
Languages : en
Pages : 622

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Book Description
Molecular spectroscopy has achieved rapid and significant progress in recent years, the low temperature techniques in particular having proved very useful for the study of reactive species, phase transitions, molecular clusters and crystals, superconductors and semiconductors, biochemical systems, astrophysical problems, etc. The widening range of applications has been accompanied by significant improvements in experimental methods, and low temperature molecular spectroscopy has been revealed as the best technique, in many cases, to establish the connection between experiment and theoretical calculations. This, in turn, has led to a rapidly increasing ability to predict molecular spectroscopic properties. The combination of an advanced tutorial standpoint with an emphasis on recent advances and new perspectives in both experimental and theoretical molecular spectroscopy contained in this book offers the reader insight into a wide range of techniques, particular emphasis being given to supersonic jet and matrix isolation techniques, spectroscopy in cryogenic solutions (including liquid noble gases), and in both crystalline and amorphous states. Suitable quantum chemical methods are also considered, as are empirically based force field methods for calculating spectra of large molecular systems. The wide range of topics covered includes: molecular dynamics and reactivity, time-resolved and high-resolution spectroscopy, conformational analysis, hydrogen bonding and solvent effects, structure and dynamics of weakly bound complexes, transition metal and organic photochemistry, spectroscopy of excited states, ab initio prediction of molecular spectra, and biochemical and astrophysical applications.