The dipole moment of HCN has been measured by using a plane-cylindrical resonator between Stark plates as absorption cell.
Chemischer InformationsdienstVolume 14, Issue 7 Physical Organic Chemistry ChemInform Abstract: ASSIGNMENT OF THE METHYL TORSIONAL FREQUENCY IN S-CIS METHYL VINYL ETHER D. DAMIANI, D. DAMIANISearch for more papers by this authorE. GALLINELLA, E. GALLINELLASearch for more papers by this authorD. G. LISTER, D. G. LISTERSearch for more papers by this author D. DAMIANI, D. DAMIANISearch for more papers by this authorE. GALLINELLA, E. GALLINELLASearch for more papers by this authorD. G. LISTER, D. G. LISTERSearch for more papers by this author First published: February 15, 1983 https://doi.org/10.1002/chin.198307058AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume14, Issue7February 15, 1983 RelatedInformation
One hundred and nine new rotational transitions of ONCl in the ground vibrational state have been measured. A centrifugal distortion analysis of these transitions yields the values of six sextic and one octic centrifugal distortion constants. A comparison between experimental and calculated sextic distortion constants is reported.
The microwave rotational spectrum of cyclohexanecarbonitrile was investigated in the frequency region 8–40 GHz. From the measured transition frequencies the rotational constants of the two molecular were derived (equatorial isomer: A = 4238.77, B = 1399.172, C = 1128.845 MHz; axial isomer: A = 3005.58, B = 1763.483, C = 1558.615 MHz). Assuming the values of 1.531, 1.096 and 1.159 Å, respectively, for the CC, CH and CN distances, and supposing that the ring structure has the same symmetry as in cyclohexane, the following structural parameters were also obtained: equatorial isomer CCC (carbon ring) = 111.40°, r(CCN) = 1.489 Å, HCCN = 107.42°; axial isomer CCC (carbon ring) = 111.65°, r(CCN) = 1.489 Å, HCCN = 105.53°.
The microwave rotational spectra of hexadeuterated, pentadeuterated and of three different monodeuterated species of cyclopentadiene have been measured. Structural parameters for hydrogen atoms have been deduced from rotational constants of these species. From these structural data for the hydrogens and from those relative to the ring determined by Scharpen and Laurie the rs and ro structures have been obtained.
From the analysis of the microwave rotational spectrum of 1,1-difluorocyclohexane in the frequency region 8–40 GHz the rotational constants (A = 3191.781, B = 1759.768, C = 1512.293 MHz), the centrifugal distortion coefficients (DJ = 124 × 10−4, DJK = 2.92 × 10−4, DK = -8.20 × 10−3) and the dipole moment and its components (μ = 2.556, μa = 2.415, μb = 0, μc = 0.837 debye) have been derived. Assuming that the CC and CH distances are the same as those of propane and that the ring structure in the chair form is symmetrical, the following structural parameters are obtained: ∠CCC = 111.95°, ∠FCF = 108.68°, C–F = 1.356 Å.
Microwave spectra of the normal and amine deuterated isotopic species of m-fluoroaniline have been observed. The structure of the amine group determined using the normal isotopic species as the parent molecule is rN–H= 1.00 Å(assumed), ∠ HNH = 115.0°, ϕ= 36.2°(ϕ is the angle between the bisector of the HNH angle and the extension of the CN bond) and is similar to that in aniline. The structure of the amine group determined using m-fluoroaniline-ND2 as the parent molecule is rN–H= 1.00 Å(assumed), ∠ HNH = 117.5°, ϕ= 42.0°.
The microwave rotational spectra of C6H1135Cl and C6H1137Cl have been measured. The rotational constants A, B and C and quadrupole coupling constants were determined. Some structural information was obtained.
The microwave rotational spectra relative to the trans and gauche rotamers of 1-pentyne have been measured. The rotational constants A, B and C and the dipole moment components μa, μb and μc were determined. Some structural information could also be obtained.
