High resolution infrared spectra and structure of borine carbonyl: The analysis of the ν2 bands of 11BD 3CO and 10BD 3CO

Abstract

The high resolution infrared spectra of 10BD 3CO and 11BD 3CO were obtained in the region of the ν 2 fundamentals. The K = 0 subbands of the ν 2 and ν 2 + ν 8 − ν 8 bands were assigned. The K structure is unresolvable with a spectral slit width of 0.03 cm −1. A series, almost as strong as the main series, has been identified in the spectrum of the 11B molecule but has not been assigned. It is shown that the four structural parameters of borine carbonyl cannot be accurately determined using only the B 0 rotational constants of four isotopically substituted molecules.