The infrared spectrum of a transient species HBNH was observed in the gas phase using a diode laser spectrometer. The HBNH molecule is formed in an ac discharge plasma of a diborane/ammonia or diborane/nitric oxide mixture. The ν3 band origin and the rotational constants of H11BNH were determined to be ν0=1786.193 08(72), B0=1.099 335(81), and B3=1.093 481(72) cm−1, with three standard deviations in parentheses. The ν3 band of H10BNH was also observed and analyzed.
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Kawashima et al. (1987) studied this question.