High Resolution FTIR Study of the nu4 + 2nu6 Rovibrational Band of CH379Br between 4870 and 5030 cm-1
The nu4+/-1 + 2nu60 and nu4-/+1 + 2nu6+/-2 perpendicular components and the nu4+/-1 + 2nu6+/-2 parallel component of the CH379Br isotopomer have been found and studied in high resolution (0.006 cm-1). Both perpendicular components are linked altogether and also to the nu2 + nu3 + nu4 band by anharmonic resonances. A model taking these anharmonic resonances and l(2,2) resonances into account has been used. It allowed to obtain a r.m.s. deviation of 0.0065 cm-1 in a least squares fit over 1327 lines (46 being zero-weighted) belonging to the three components of nu4 + 2nu6 and to the calculated KDeltaK = -1 sub-band of nu2 + nu3 + nu4 deduced from the corresponding observed sub-band of nu2 + nu3 + nu4 - nu3. Copyright 1997 Academic Press. Copyright 1997Academic Press
Sari-Zizi
NB
Faculte des Sciences, Universite Mohammed V, Rabat (Agdal), Morocco
Alamichel
C