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Shielding Effects in Covalent Halogen Compounds

Introductory Aspects. Relaxation in Molecules or Ions with Covalently Bonded Halogens. Shielding Effects in Covalent Halogen Compounds. Scalar Spin Couplings. Relaxation of Chloride, Bromide and Iodide Ions. Shielding of Halide Ions. Quadru-pole Splittings in Liquid Crystals. Halide Ions in Biological Systems. Studies of the Perchlorate Ion. [Pg.383]

Covalent compounds with the halogen nucleus at a site of tetrahedral or octahedral symmetry, as in CIO4 or IF5, present a low EFC at the halogen nucleus and frequently have relatively sharp resonances. Indeed the spectra of the tetrahedral perhalate ions in acetonitrile solution show exceptionally sharp lines that enable secondary isotope effects on shielding to be observed. The shielding difference between (CT 04) and (CT O Os)" is 0.090 ppm. [Pg.678]

See other pages where Shielding Effects in Covalent Halogen Compounds is mentioned: [Pg.60]    [Pg.62]    [Pg.64]    [Pg.66]    [Pg.68]    [Pg.70]    [Pg.72]    [Pg.74]    [Pg.80]    [Pg.82]    [Pg.84]    [Pg.60]    [Pg.62]    [Pg.64]    [Pg.66]    [Pg.68]    [Pg.70]    [Pg.72]    [Pg.74]    [Pg.80]    [Pg.82]    [Pg.84]    [Pg.322]    [Pg.79]    [Pg.1177]    [Pg.1177]    [Pg.504]   


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Covalent compounds

Covalent halogen compounds

Covalent halogenation

Effective compound

Halogen compounds

Halogen effect

Halogenation compounds

In halogenation

Shield effect

Shield effectiveness

Shielded compounds

Shielding compound

Shielding effectiveness

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