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Dependence of the pure quadrupole resonance frequency on temperature and molar specific heat for NaBrO 3
Author(s) -
Stahl Edward A.,
Tipsword Ray F.
Publication year - 1990
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260280202
Subject(s) - chemistry , molar , quadrupole , moment of inertia , atmospheric temperature range , specific heat , debye model , thermodynamics , lattice vibration , heat capacity , debye , nuclear magnetic resonance , analytical chemistry (journal) , atomic physics , condensed matter physics , organic chemistry , quantum mechanics , physics , orthodontics , medicine , phonon
The molar specific heat of NaBrO 3 in the temperature range 4.2–336 K was determined experimentally and compared with the theory developed by Stahl and generalized in this paper. The relationship between the molar specific heat and temperature was explicitly studied and compared with results obtained by other workers. The method developed also produces the Debye temperature, Θ the maximum angular frequency, omega; m , and the product Iω t 2 of the BrO 3 group, where I is the moment of inertia and ω l , is the lattice vibration. The relationships between the 79 Br NQR frequency and temperature and between the NQR frequency and molar specific heat were obtained.