High-resolution infrared measurements of v1 and force field calculations for thioborine (HBS)

The gas-phase high-resolution spectrum is reported for v₁ of the linear molecule thioborine (HBS) from 2775 cm^?1 to 2720 cm^?1. Band centers and rotational constants are given for the 10⁰0-00⁰0 transitions of H¹¹B³²S, H¹⁰B³²S, H¹¹B³⁴S and H¹⁰B³⁴S and for the 11¹0-01¹0 transitions of H¹¹B³²S and H¹⁰B³²S. A valence force field is determined from measured values of v₁, D_o (the centrifugal distortion) and q (the l-doubling constant). The remaining unobserved vibrational fundamentals are calculated from the force constants.