TY  - JOUR
A1  - Holm, Reimer
A1  - Mitzlaff, Michael
A1  - Hartmann, Hermann
T1  - Mikrowellenspektrum, interne Rotation, Struktur und Dipolmoment von Methylchloroform
T2  - Zeitschrift für Naturforschung, A
N2  - The microwave spectrum of several symmetric and asymmetric top isotopic species of CH3CCl3 has been studied in the region from 8 to 40 GHz. A least squares analysis of the rotational con-stants gave the following structural parameters : dC-C =(1.541 ±0.001) A, dC-Cl = (1,7712 ± 0.0008) A, dC-H = (1.090 ± 0.002) A, ∢H—C—H= (110.04±0.25) ° , ∢Cl—C—Cl= (109.39 ±0.25) °. A dipole moment of μ = (1.755 ± 0.015) D has been derived from the investigation of the Stark effect of the transition J=4→5 of CH3CCl3335. From intensity measurements the barrier to internal rotation is estimated to be (1740 ± 300) cal/mol. An analysis of the spectrum of CH2DCCl2Cl37 shows conclusively that methylchloroform in its equilibrium configuration has the methyl group staggered with respect to the CCl3-group. It could be shown that there exist two torsional isomers gauche and anti with specific microwave spectra.
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/74075
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-740750
SN  - 1865-7109
VL  - 23
IS  - 2
SP  - 307
EP  - 311
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -