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Nuclear Magnetic Resonance Spectroscopy. Use of Carbon-13 Isotropic Shifts as a Probe of Mechanisms of Spin Transmission in Metal Complexes. Some Pyridine-Type Bases and Triphenylphosphine Complexed to Nickel(II) and Cobalt(II) Acetylacetonates

Roberts, John D. and Doddrell, David (1970) Nuclear Magnetic Resonance Spectroscopy. Use of Carbon-13 Isotropic Shifts as a Probe of Mechanisms of Spin Transmission in Metal Complexes. Some Pyridine-Type Bases and Triphenylphosphine Complexed to Nickel(II) and Cobalt(II) Acetylacetonates. Journal of the American Chemical Society, 92 (23). pp. 6839-6844. ISSN 0002-7863. https://resolver.caltech.edu/CaltechAUTHORS:20151012-133440749

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Abstract

The theory of isotropic nmr chemical shifts produced by transition metal ions with unpaired electrons suggests that the relative signs and magnitudes of the proton and ^(13)C isotropic shifts should be directly related to the mode by which unpaired spin density is transmitted from the metal to the ligand. It has been concluded that the shifts observed in the ^(13)C and ^1H spectra of some pyridine-type bases and triphenylphosphine complexed to cobalt(II) and nickel(II) acetylacetonates are indicative of spin density in both the CT and T frameworks of the ligands. The IC isotropic shifts appear to be controlled mainly by contact interactions.


Item Type:Article
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http://dx.doi.org/10.1021/ja00726a020DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja00726a020PublisherArticle
Additional Information:© 1970 American Chemical Society. Received April 6, 1970. Supported by the National Science Foundation.
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Caltech Gates and Crellin Laboratories of Chemistry4034
Issue or Number:23
Record Number:CaltechAUTHORS:20151012-133440749
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151012-133440749
Official Citation:Nuclear magnetic resonance spectroscopy. Use of carbon-13 isotropic shifts as a probe of mechanisms of spin transmission in metal complexes. Some pyridine-type bases and triphenylphosphine complexed to nickel(II) and cobalt(II) acetylacetonates John D. Roberts and David Doddrell Journal of the American Chemical Society 1970 92 (23), 6839-6844 DOI: 10.1021/ja00726a020
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61000
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2015 03:53
Last Modified:03 Oct 2019 09:03

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