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A Short History of Three Chemical Shifts

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Shin-ichi Nagaoka

Department of Chemistry, Faculty of Science, Ehime University, Matsuyama 790-8577, Japan

J. Chem. Educ., 2007, 84 (5), p 801

DOI: 10.1021/ed084p801

Publication Date (Web): May 1, 2007

Section:

History, Education, and Documentation

Abstract

The distinctive term "chemical shift" to designate the position of a spectral signal is used in three forms of spectroscopy: nuclear magnetic resonance (NMR), electron spectroscopy for chemical analysis (ESCA), and Mössbauer spectroscopy. Regrettably, chemical shift has a poor reputation as a technical term. However, the "chemical" environment around an atom of interest influences the electronic environment and hence, leads to spectral shifts. Therefore, using the prefix "chemical" for the shifts observed in the three forms of spectroscopy is appropriate.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

History / Philosophy

Keywords (Pedagogy):

Textbooks / Reference Books

Keywords (Subject):

NMR Spectroscopy

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

A Study To Control Chemical Reactions Using Si:2p Core Ionization: Site-Specific Fragmentation
Shin-ichi Nagaoka, Hironobu Fukuzawa, Georg Prümper, Mai Takemoto, Osamu Takahashi, Katsuhiro Yamaguchi, Takuhiro Kakiuchi, Kiyohiko Tabayashi, Isao H. Suzuki, James R. Harries, Yusuke Tamenori, and Kiyoshi Ueda
The Journal of Physical Chemistry A2011 115 (32), 8822-8831
- A Study To Control Chemical Reactions Using Si:2p Core Ionization: Site-Specific Fragmentation
  Shin-ichi Nagaoka, Hironobu Fukuzawa, Georg Prümper, Mai Takemoto, Osamu Takahashi, Katsuhiro Yamaguchi, Takuhiro Kakiuchi, Kiyohiko Tabayashi, Isao H. Suzuki, James R. Harries, Yusuke Tamenori, and Kiyoshi Ueda
  The Journal of Physical Chemistry A2011 115 (32), 8822-8831
  In an aim to create a “sharp” molecular knife, we have studied site-specific fragmentation caused by Si:2p core photoionization of bridged trihalosilyltrimethylsilyl molecules in the vapor phase. Highly site-specific bond dissociation has been found to ...
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