Fourier Transform Microwave Laboratory Detection of HSiNH_2

Details Fourier Transform Microwave Laboratory Detection of HSiNH_2 Fourier Transform Microwave Laboratory Detection of HSiNH_2

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..conferc04l&link_type=abstract

"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. htt p://molspe

Physics

Microwave (Rotational)

Scientific paper

HSiNH_2 has been detected by means of Fourier Transform Microwave spectroscopy through its fundamental rotational transition (JK_a,K_c=10,1→0 0,0). The molecule was produced in a discharge of a mixture of silane and ammonia heavily diluted in neon in the throat of a pulsed nozzle prior to supersonic expansion. High level ab initio calculations at the CCSD(T) level of theory have guided our laboratory search. The fundamental rotational transition has been detected within 0.1% of the predicted frequency and shows expected hyperfine structure from the presence of the nitrogen nucleus. Confirmation of the assignment is provided by the detection of the same transition for several isotopic species at precisely the expected predicted frequency, with the same hyperfine splitting. Microwave-microwave double-resonance techniques have been used to detect a second rotational transition.

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