Journal ArticleDOI
A $^{13}$ and $^{31}$P Magnetic Double Resonance Study of Organo-Phosphorus Compounds
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TLDR
In this paper, the signs and magnitudes of the spin-spin coupling constants of organo-phosphorus compounds have been examined by magnetic double resonance spectroscopy, and parallel behavior is noted between two types of coupling constants.Abstract:
Twenty-two organo-phosphorus compounds of a variety of structural types have been examined by $^1$H-{$^{13}$C} and $^1$H-{$^{31}$P} magnetic double resonance spectroscopy. The signs and magnitudes of the $^{31}$P-H and $^{31}$P-$^{13}$C spin-spin coupling constants are sensitive to the valency of the phosphorus atom, and the nature of the groups attached to it. Parallel behaviour is noted between two types of coupling constant. The $^{31}$P chemical shifts agree with results obtained by conventional $^{31}$P single resonance spectroscopy, and the $^{13}$C chemical shifts depend on the polarizability of the phosphorus atom and its associated groups.read more
Citations
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Journal ArticleDOI
NMR Nomenclature: Nuclear Spin Properties and Conventions for Chemical Shifts. IUPAC Recommendations 2001.
Robin K. Harris,Edwin D. Becker,Sonia Maria Cabral de Menezes,Robin J. Goodfellow,Pierre Granger +4 more
TL;DR: The chemical shift, delta, is redefined to avoid previous ambiguities but to leave practical usage unchanged, and Relations between the unified scale and recently published recommendations for referencing in aqueous solutions are discussed, as well as the special effects of working in the solid state with magic-angle spinning.
Journal ArticleDOI
Effect of electron lone-pairs on nuclear spin–spin coupling constants
TL;DR: In this article, the nature and types of lone-pair effects on nuclear spin coupling constants are reviewed in the context of a localized bond description of molecular electronic structure, with particular attention paid to couplings involving H, C, N, F and P nuclei, organized in a systematic manner into nine categories.
Book ChapterDOI
Application of 119Sn NMR Parameters
TL;DR: In this paper, the impact of 119Sn nuclear magnetic resonance (NMR) parameters, determined either by 119Sn NMR or in the NMR spectra of other nuclei, on tin chemistry is remarkable.
Journal ArticleDOI
High‐Resolution Metal NMR Spectroscopy of Organometallic Compounds [New Analytical Methods (30)]
Reinhard Benn,Anna Rufińska +1 more
TL;DR: In this paper, the use of metal-NMR spectroscopy with respect to problems of a typical chemical nature, mainly from the field of organometallics, is demonstrated for a number of selected metal nuclei (25Mg, 27Al, 49Ti, 57Fe, 59Co, 61Ni, 91Zr, 103Rh and 195Pt).
Journal ArticleDOI
NMR nomenclature: nuclear spin properties and conventions for chemical shifts. IUPAC Recommendations 2001. International Union of Pure and Applied Chemistry. Physical Chemistry Division. Commission on Molecular Structure and Spectroscopy
Robin K. Harris,Edwin D. Becker,Sonia Maria Cabral de Menezes,Robin J. Goodfellow,Pierre Granger +4 more
TL;DR: In this article, a unified scale for reporting the NMR chemical shifts of all nuclei relative to the 1H resonance of tetramethylsilane is proposed, which is designed to provide a precise ratio, Ξ, of the resonance frequency of a given nuclide to that of the primary reference.
References
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Journal ArticleDOI
Effect of Electronegativity and Magnetic Anisotropy of Substituents on C13 and H1 Chemical Shifts in CH3X and CH3CH2X Compounds
H. Spiesecke,W. G. Schneider +1 more
TL;DR: In this article, an investigation of the major contributions which make up the relative chemical shifts in CH3X and CH3CH2X compounds was made, revealing surprisingly large contributions to both C13 and H1 shifts arising from magnetic anisotropy effects of the X substituent.
Journal ArticleDOI
Phosphorus magnetic resonance spectra of adenosine di- and triphosphate. I. Effect of pH.
Mildred Cohn,Thomas R. Hughes +1 more
Journal ArticleDOI
Chapter 2 High resolution nuclear magnetic resonance in partially oriented molecules
A.D. Buckingham,K.A. McLauchlan +1 more
TL;DR: In this paper, the effective Hamiltonians for interpreting high-resolution NMR spectra of partially oriented molecules are developed and applied to some special cases, such as shielding constants, spin coupling constants, nuclear quadrupole coupling constants and mean orientation of a molecule in an anisotropic environment.