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One-bond P-X coupling constants

One bond P-X coupling constants (/px) have generally been rationalized in terms of a dominant Fermi-contact term... [Pg.575]

One-bond P-H coupling constants appear always to be positive and vary from about -hl20 to -I-1180 Hz. Other heteroatom one-bond P-X coupling constants vary over a similar wide range and can be either positive or negative. The expected range of values is given in Table 1. [Pg.576]

We carried out ab initio EOM-CCSD calculations to evaluate one-, two-, and three-bond 13C-13C, 15N-13C, 31P-13C coupling constants in benzene (161), pyridine (164, X = H), pyridinium (188), phosphinine (also called phosphabenzene and A,3-phosphorin) (189), and phosphininium (190). The introduction of N or P heteroatoms into the aromatic ring not only changes the magnitudes of the corresponding... [Pg.183]

See other pages where One-bond P-X coupling constants is mentioned: [Pg.575]    [Pg.38]    [Pg.38]    [Pg.575]    [Pg.38]    [Pg.38]    [Pg.271]    [Pg.252]    [Pg.513]    [Pg.304]    [Pg.28]    [Pg.178]    [Pg.265]    [Pg.33]    [Pg.389]    [Pg.19]    [Pg.256]    [Pg.262]    [Pg.295]    [Pg.7]    [Pg.11]    [Pg.271]    [Pg.282]    [Pg.295]    [Pg.368]    [Pg.166]    [Pg.76]    [Pg.134]    [Pg.597]    [Pg.252]    [Pg.663]    [Pg.32]    [Pg.126]    [Pg.60]    [Pg.309]    [Pg.110]    [Pg.62]    [Pg.71]    [Pg.597]    [Pg.882]    [Pg.32]    [Pg.350]    [Pg.116]    [Pg.336]    [Pg.23]    [Pg.126]    [Pg.173]    [Pg.614]    [Pg.178]   
See also in sourсe #XX -- [ Pg.38 ]



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Couplings one-bond

P Couplings

P bonds

P-bonding

X-bonds

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