Temperature Dependence of Internal Torsional Frequencies in 3,4-Dichloro Nitrobenzene and 4-Chloro 2 Nitrophenol Using NQR Data

• Authors: K. Rukmani , J. Rani
• Languages of publication: EN

Abstracts

EN

The temperature variation of the nuclear quadrupole resonance frequency in the two compounds 3,4-dichloro nitrobenzene and 4-chloro 2 nitrophenol were analyzed in the light of the Kushida and Brown models. The internal torsional frequencies at each temperature was calculated using Bayer's model with Tatsuzaki correction under a two-mode approximation to obtain the temperature variation of the torsional frequencies in both compounds. The torsional frequencies are seen to lie between 25 cm^{-1} and 85 cm^{-1} in the first compound and between 30 cm^{-1} and 42 cm^{-1} in the case of the second compound. The temperature dependence of the torsional frequencies is linear above 150 K in the first compound and is linear throughout the range 77 K to 350 K in the second. The smaller temperature dependence in the second compound may be the effect of hydrogen bonding in this compound.

Keywords

EN

76.60.Gv

Discipline

• 76.60.Gv: Quadrupole resonance

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 6
• Pages: 1067-1072

Dates

published

2009-12

received

2009-07-14

(unknown)

2009-09-14

(unknown)

2009-10-01

Contributors

author

K. Rukmani

• Department of Physics, Bangalore University, Bangalore 560056, India

author

J. Rani

• Department of Physics, Bangalore University, Bangalore 560056, India

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Identifiers

DOI

10.12693/APhysPolA.116.1067