Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Local diamagnetic shielding

FIGURE 3.20 A simplified correlation chart for proton chemical shift values. [Pg.121]

Similar conclusions are also reached for the magnetic shielding of atoms, as revealed by a detailed study of a series of amines, nitriles, ammonia, pyridine, pyra-zine, pyrimidine, and pyridazine [119]. Their local diamagnetic shielding is virtually... [Pg.67]

The values of chemical shift given in Figure 26.7 and in Table 26.1 can be easily understood in terms of two factors local diamagnetic shielding and anisotropy. These two factors are discussed in Sections 26.7 and 26.8. [Pg.905]

Local diamagnetic shielding of a photon due to its valence electrons. [Pg.907]

Hydrogens attached to the same carbon as a halogen are deshielded (local diamagnetic shielding) due to the electronegativity of the attached halogen (Section 5.11A). The amount of deshielding... [Pg.258]

For a nonspherical charge distribution about the phosphorus nucleus, the shielding constant largely results from a local diamagnetic shielding contribution ffj and a local paramagnetic shielding contribution Op (Pople et al., 1959) ... [Pg.8]

See other pages where Local diamagnetic shielding is mentioned: [Pg.107]    [Pg.295]    [Pg.121]    [Pg.121]    [Pg.121]    [Pg.123]    [Pg.143]    [Pg.907]    [Pg.234]    [Pg.234]    [Pg.235]    [Pg.237]    [Pg.11]    [Pg.140]    [Pg.124]    [Pg.124]    [Pg.127]   
See also in sourсe #XX -- [ Pg.107 ]

See also in sourсe #XX -- [ Pg.234 , Pg.238 ]



SEARCH



Diamagnetic

Diamagnetic shielding

Diamagnetics

Diamagnetism

Diamagnets

Local shielding

Shielding diamagnetism

© 2024 chempedia.info