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The emission spectrum of the fundamental vibration–rotation ν1 band (NH stretch) of iminosilicon HNSi has been observed near 2.7 μm by high resolution Fourier transform spectroscopy from a mixture of N2+SiH4 excited in a radio frequency discharge. This is the first spectroscopic observation of this molecule in the gas phase. Molecular constants σ, B, D, H are reported. Calculated microwave transitions which should be helpful for the investigation and the possible identification of HNSi in astrophysical sources are also given.
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Elhanine et al. (1991) studied this question.
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