Barrier to internal rotation of the silyl group in cyclopropyl silane from the MW spectrum in the first excited torsional state

• Published in: Journal of molecular spectroscopy Vol. 120; no. 2; pp. 435 - 440
• Main Authors: Typke, Volker, Botskor, Ivan, Wiedenmann, Karl-Heinz
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.12.1986; Elsevier
• Subjects: Atomic and molecular physics; Barrier heights (internal rotation, inversion, rotational isomerism, conformational dynamics); Exact sciences and technology; Molecular properties and interactions with photons; Physics; Properties of molecules and molecular ions; Microwave microwave double resonance; Rotation barrier; Internal rotation; Silicon Organic compounds; Rotational transition; Rotational constant; Stark effect; Experimental study; Centrifugal distorsion constant; Saturated cyclic compound; Transition energy; Microwave spectrum; Molecular constant; Vibrationally excited state; Monocyclic compound; Organic compounds
• ISSN: 0022-2852; 1096-083X
• DOI: 10.1016/0022-2852(86)90016-0

The MW spectrum of the first excited state of the internal rotation of the silyl group in cyclopropyl silane has been recorded and analyzed in the frequency region 6.9–38.0 GHz. Recordings were made with conventional Stark spectroscopy as well as with MW-MW double resonance. From the analysis of the torsional splittings the following parameters were derived: V 3=1917.6(44) cal/mole, I α=5.888(14) u ∗ A 2, V a=21.56(21)°