R P Punyarthi
Articles written in Proceedings – Section A
Volume 48 Issue 3 September 1958 pp 130-137
The near ultraviolet absorption spectra of 5-chlorothianaphthene and 7-bromothianaphthene have been investigated in the region 3050 to 2800 Å and 3050 to 2850 Å respectively—corresponding to longest wavelength system. The tentative vibrational assignments are put forward for the prominent bands. The assignment of certain frequencies are discussed with respect to the effect of substitution (Cl or Br) in the phenyl part of the thionaphthene nucleus.