N.Q.R. Zeeman Spectra of Bromine in p-Bromophenol and p-Bromoaniline

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Abstract
Zeeman effect of Br 79 and Br 81 nuclear quadrupole resonance had been carried out at room temperature in single crystals of p -bromophenol and p -bromoaniline. Two inequivalent field gradient systems are observed in both the compounds. The asymmetry parameter of the field gradient is determined to be 0.07±0.03 and 0.08±0.03 for p -bromophenol and p -bromoaniline respectively. The minimum number of the molecules in the unit cell, the orientation of the molecular plane and the C-Br bond characters are estimated in both the compounds.