Theoretical and Experimental Chemistry

, Volume 21, Issue 2, pp 227–230 | Cite as

Dependence of nuclear quadrupole double resonance spectra on the level of the saturating radio-frequency field

  • S. V. Anferova
  • V. S. Grechishkin
  • V. P. Anferov


The dependence of the intensity of nuclear quadrupole double resonance (NQDR) lines on the level of the saturating rf field and the nature of its absorption has been studied. It has been shown that the intensity of the solid-state doublets depends on the square of the amplitude of the saturating field. Pure solid-state doublets have been recorded for the first time for amino groups in eight compounds. Picolinamide, nicotinamide, acetamide, and trichloroacetamide comprise a group of compounds with similar values for the quadrupole coupling constants and the asymmetry parameters. Urosulfan, guanidine chloride, urea, and thiourea make up another group. The interproton distances in the amino groups have been determined in all the compounds on the basis of the multiplet structure of the NQDR lines.


Chloride Urea Thiourea Guanidine Nicotinamide 
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Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • S. V. Anferova
    • 1
  • V. S. Grechishkin
    • 1
  • V. P. Anferov
    • 1
  1. 1.Kaliningrad State UniversityUSSR

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