Accession Number : ADA289318

Title :   High Resolution Fourier Transform Spectroscopy of the First Overtone of the N-O Stretch in Nitrosyl Bromide.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Wiest, Todd E.

PDF Url : ADA289318

Report Date : SEP 1994

Pagination or Media Count : 117

Abstract : Infrared Fourier transform spectroscopy of the first overtone of the nitric oxide (NO) bond stretch in nitrosyl bromide (ONBr) has been performed at a resolution of 0.02/cm-1 to obtain the rotational parameters of the V sub 1 = 2 energy level. Roughly 1000 transitions have been observed for rotational levels up to J = 80 and K sub a = 7. The calculation of the complete set of rotational energy levels of this asymmetric molecule requires the numerical diagonalization of four, tridiagonal matricies for each J. From a non-linear least squares fit of observed transitions with J < or = to 40 using an approximation for the energy levels, the maximum J value accurately approximated was determined to be twenty-four. The fit was reaccomplished for J < or = to 24. The Monte Carlo analysis suggests the need to use higher J levels to determine the distortion constants.

Descriptors :   *FOURIER TRANSFORMATION, *INFRARED SPECTROSCOPY, *NITROGEN OXIDES, *BROMIDES, DEPLETION, MOLECULES, PARAMETERS, THESES, MONTE CARLO METHOD, CHEMICAL BONDS, ASYMMETRY, CONSTANTS, MOLECULAR ROTATION, ENERGY LEVELS, ROTATION, DISTORTION, OZONE, MOLECULAR ENERGY LEVELS, NITROSO COMPOUNDS.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE