Thianthrene dipole moment

X-ray, 3, 947 <63AX310> trans-Thianthrene 5,10-dioxide dipole moment, 3, 947 <65JCS571)... 

Emerging first from measurements (66HC1155) that showed thianthrene to have a dipole moment in the range 1.45-1.57 D, it has been long... 

Dipole moment measurements of solutions of cis- (64BSF2119 65JCS571) and tru/ii-thianthrene 5,10-dioxide (65JCS571) and of thianthrene 5,5,10,10-tetroxide (65JCS57I) gave values of 1.86 and 1.70, 4.88, and 5.11 D, from which fold angles of 139°, 130°, and 140° respectively, were calculated. 

Data on the apparent dipole moment and H NMR spectra of thianthrene-5-oxide 24 under different conditions of solvent and temperature support the rapid conformational equilibrium of 24, which flaps between two limit boat conformations with the sulfoxide group in a pseudoaxial or pseudoequatorial position, respectively. Variable-temperature... 

DIPOLE MOMENTS AND MOLECULAR STRUCTURE In a number of cases the magnitude of the dipole moment may be used to determine the geometrical configuration of the atoms in a molecule. Thus the first proof of the triangular structure of water arose from dipole moment measurements. Calculation may also be made of the valency angles from dipole moment data, but the values obtained are not as accurate as the more direct methods employing spectra, x-ray and electron diffraction measurements. However, for complex molecules when the application of more exact methods is not possible, the analysis of the dipole moment data may give valuable information. Thus the moment of thianthrene is 1-57, D,... 

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