Daftar Isi: Dipole Moments and UV Spectra of some Long-chain Molecules

Daftar Isi:

Department of Chemistry, Annamalai University, Annamalainagar-608 002 Manuscript received 8 October 1991, accepted 1 April 1992 About one hundred compounds with long-chain molecular structure have been prepared (most of them are new). The dipole moments of fou \(\alpha,\omega-bis\)(p-methoxyphenylthio)alkanes and five \(\alpha,\omega-bis\)(p-methoxyphenylsulphonyl)aikanes have been determined to find the effect of chain-length. In the case of the sulphones, the observed values are compared with the values calculated for free rotation around all bonds intervening the end dipoles. The uv spectra of some 1,2-(distyrylsulphonyl) ethanes, and a number of \(\alpha,\omega-bis\)(arylsulphonyl)- and \(\alpha,\omega-bis\)(aryloxy)alkanes have been recorded to examine the applicability of the principle of chromophore additivity.