Nuclear Magnetic Resonance Studies of Pentafluorophenyl Compounds PDF Download
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Author: Michael Gordon Hogben
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 0
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Book Description
The pentafluorophenyl group has been studied using nuclear magnetic resonance. The spectra of several pentafluorophenyl derivatives of widely varied chemical types have been analysed. Correlations are found among the nmr variables. In particular the coupling constant between ortho and para fluorines was found to give a straight line relationship with the chemical shift of the para fluorine. This is termed the J[subscript 24] - [phi]p relationship. Another meta fluorine coupling, the coupling constant between the two ortho fluorines, also forms a straight line relationship with the chemical shift of the para fluorine. These two correlations appear to be dependent upon the [pi] donor-acceptor character of the substituent. This argument is then used to study the electronic interactions in selected series of organometallic and inorganic compounds. Interpretations of the bonding involved in these compounds are also given.
Author: Michael Gordon Hogben
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 0
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Book Description
The pentafluorophenyl group has been studied using nuclear magnetic resonance. The spectra of several pentafluorophenyl derivatives of widely varied chemical types have been analysed. Correlations are found among the nmr variables. In particular the coupling constant between ortho and para fluorines was found to give a straight line relationship with the chemical shift of the para fluorine. This is termed the J[subscript 24] - [phi]p relationship. Another meta fluorine coupling, the coupling constant between the two ortho fluorines, also forms a straight line relationship with the chemical shift of the para fluorine. These two correlations appear to be dependent upon the [pi] donor-acceptor character of the substituent. This argument is then used to study the electronic interactions in selected series of organometallic and inorganic compounds. Interpretations of the bonding involved in these compounds are also given.
Author: Frederick K. Molen
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Category : Amines
Languages : en
Pages : 0
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Author: G.N. la Mar
Publisher: Springer Science & Business Media
ISBN: 9401585733
Category : Science
Languages : en
Pages : 403
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Since A. Kowalsky's first report of the spectrum of cytochrome c in 1965, interest in the detection, assignment and interpretation of paramagnetic molecules has surged, especially in the last decade. Two classes of systems have played a key role in the development of the field: heme proteins and iron-sulfur proteins. These two systems are unique in many respects, one of which is that they contain well-defined chromophores, each of which can be studied in detail outside the protein matrix. They are the most successfully studied macromolecules, and the first eight and last six of the seventeen contributions to this book deal with heme and/or iron-sulfur proteins. The middle three chapters survey the progress on, and significant promise of, more difficult systems which do not possess a chromophore, but which have nevertheless yielded remarkable insights into their structure.
Author: Uppaluri Rama Krishna Rao
Publisher:
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Category :
Languages : en
Pages : 171
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Author: Bruce Victor Cheesman
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Category :
Languages : en
Pages : 432
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Author: L. A. Buckley
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Category :
Languages : en
Pages :
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Author: I. J. Colquhoun
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Category :
Languages : en
Pages :
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Author: David A. Stanislawski
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Category : Methylpolysilanes
Languages : en
Pages : 312
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Author: Per Albriktsen
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Category :
Languages : en
Pages : 135
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Author: D. J. Mowthorpe
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Category :
Languages : en
Pages :
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