VIBRATIONAL SPECTRA AND FORCE CONSTANTS FOR ISOTOPIC SPECIES OF NITROSYL BROMIDE
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abstract
From infrared absorption studies in the gaseous phase, the fundamental harmonic vibrational frequencies have been determined for 16O14NBr, 16O15NBr, 18O14NBr, and 18O15NBr. With the aid of centrifugal distortion data from the literature, a unique general quadratic valence force constant solution was obtained. The resulting values are: FNO = 15.25 md/A, FNBr = 1.13 md/A, F = 1.13 md A/rad2, FNO,NBr = 1.47 md/A, FNO, = 0.11 md/rad, and FNBr, = 0.10 md/rad. Interaction displacement coordinates were calculated and were used along with the force constants to describe the bonding in ONBr, ONCl, and ONF. 1969.