عنوان

Deuterium and Shift Calculation

شابک

3642759327

شابک

9783642759321

شماره

b573445

عنوان اصلي

Deuterium and Shift Calculation

نام عام مواد

[Book]

نام نخستين پديدآور

by U. Fleischer, W. Kutzelnigg, H.-H. Limbach, G. J. Martin, M. L. Martin, M. Schindler.

وضعيت ويراست

First edition

محل نشرو پخش و غیره

Berlin, Heidelberg

نام ناشر، پخش کننده و غيره

Springer Berlin Heidelberg

تاریخ نشرو بخش و غیره

1991

نام خاص و کميت اثر

(X, 263 p.).

عنوان فروست

NMR Basic Principles and Progress, 23.

متن يادداشت

Bibliographic Level Mode of Issuance: Monograph.

متن يادداشت

Deuterium NMR in the Study of Site-Specific Natural Isotope Fractionation (SNIF-NMR) --; Dynamic NMR Spectroscopy in the Presence of Kinetic Hydrogen/Deuterium Isotope Effects --; The IGLO-Method: Ab-initio Calculation and Interpretation of NMR Chemical Shifts and Magnetic Susceptibilities --; Author Index Volumes.

متن يادداشت

In 1931 Vrey, Brickwedde, and Murphy discovered the hydrogen isotope deuterium. The isotopic enrichment was found to arise from the fact that the electrolysis oflight water is faster than of heavy water [1,2]. This success showed that although different isotopes of an element behave identically from a chemical standpoint the different isotopic masses nevertheless lead to both isotope effects on equilibrium as well as on rate constants of chemical reactions. Soon, ratios of equilibrium constants of isotopic reactions were called "equilibrium isotope effects" (EIE), ratios of isotopic rate constants "kinetic isotope effects" (KIE). Isotope effects have been found to be especially large for those elements which are directly involved in bond breaking and bond formation during the reaction studied [3]. Such effects are, therefore, referred to as "primary". Isotopic substitution in atomic sites which maintain all chemical bonds with their neighbors during the reaction of interest leads then only to smaller "secondary" isotope effects. Because of the unique mass relation between the different hydrogen isotopes hydrogen/deuterium isotope effects are particularly large and have attracted most attention. The largest contributions to these effects arise from changes in the vibrational frequencies of the reactants. The theory of equilibrium isotope effects has been founded by Vrey [4] and Bigeleisen [5,6] and has widely been accepted [3].

موضوع مستند نشده

Chemistry, Organic.

موضوع مستند نشده

Chemistry, Physical and theoretical.

موضوع مستند نشده

Chemistry.

شماره رده

نشانه اثر

مستند نام اشخاص تاييد نشده

by U. Fleischer, W. Kutzelnigg, H.-H. Limbach, G. J. Martin, M. L. Martin, M. Schindler.

مستند نام اشخاص تاييد نشده

G J Martin

مستند نام اشخاص تاييد نشده

H -H Limbach

مستند نام اشخاص تاييد نشده

M L Martin

مستند نام اشخاص تاييد نشده

M Schindler

مستند نام اشخاص تاييد نشده

U Fleischer

مستند نام اشخاص تاييد نشده

W Kutzelnigg

نام الکترونيکي

نوع ماده

[Book]

تكميل شده

Y