title: High-resolution Fourier-transform infrared spectroscopy of the ν6 and Coriolis perturbation allowed ν10 modes of ketenimine.
abstract: High-resolution FTIR spectra of the short lived species ketenimine have been recorded in the region 700-1300 cm(-1) and over 1500 transitions of the ν(10) and ν(6) modes have been assigned. Effective rotational and centrifugal distortion parameters for the v(10) = 1 and v(6) = 1 (excluding K(a) = 5) states were determined by co-fitting transitions, and treating strong a- and c-axis Coriolis interactions between them. Other perturbations attributed to interactions with the v(8) = 2 and v(12) = 1 + v(8) = 1 dark-states were also observed and treated. The ν(10) transitions are predicted to be inherently very weak, but are enhanced by an intensity stealing effect with the highly IR active ν(6) mode. A mechanism for this intensity stealing in ketenimine is also detailed.
authors.affiliation: School of Chemistry, Monash University, Wellington Rd., Clayton, Victoria 3800, Australia.
authors.forename: Michael K
authors.initials: MK
authors.lastname: Bane
authors.forename: Evan G
authors.initials: EG
authors.lastname: Robertson
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Thompson
authors.forename: Dominique R T
authors.initials: DR
authors.lastname: Appadoo
authors.forename: Don
authors.initials: D
authors.lastname: McNaughton