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Phosphorus-31 chemical shifts bond-angle effects

Bond-angle changes and hence distortion fiom tetrahedral symmetry in tetracoordinated phosphorus compounds should affect the chemical-shift anisotropy as well. Dutasta et a/. (1981) experimentally have verified this bond-angle effect in a solid-state P-NMR study on a series of cyclic thioxophosphonates (1 -4). As shown in Table II, the shielding tensors are... [Pg.13]

B. Bond-Angle Effects on Chemical Shifts in Nontetracoordinated Phosphorus Compounds... [Pg.14]

On the whole, compared with Pm compounds, quaternization of phosphorus produces a large 31P downfield chemical shift which parallels the bond angle changes, including those due to the steric effects coming from phosphorus substituents (shielding y-effect) (cf. Table 2). [Pg.49]

See other pages where Phosphorus-31 chemical shifts bond-angle effects is mentioned: [Pg.46]    [Pg.407]    [Pg.574]    [Pg.163]    [Pg.10]    [Pg.14]    [Pg.273]    [Pg.574]    [Pg.81]    [Pg.131]    [Pg.239]    [Pg.78]    [Pg.398]    [Pg.19]    [Pg.121]    [Pg.141]    [Pg.574]    [Pg.389]    [Pg.12]    [Pg.23]   
See also in sourсe #XX -- [ Pg.13 , Pg.14 , Pg.15 , Pg.16 , Pg.17 , Pg.18 , Pg.19 , Pg.23 ]



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