Rotational spectrum and structure of thioborine: HBS

Abstract

The millimeter‐wave spectra of eight isotopic species of thioborine have been observed. This unstable molecule displays the rotational spectrum of a linear rotor. For the most abundant isotopic species, H¹¹B³²S, the rotational and centrifugal distortion constants are B₀=19,083.006 MHz and D₀=21.89 kHz. Complete substitution structures have been evaluated eight different ways from the variety of isotopic species observed. The resulting mean values for the B‐H and S‐B distances (in angstrom units) are 1.1692 and 1.5994, respectively.