Naphthalene tetrachlorides and related compounds. Part 10. The carbon-13 nuclear magnetic resonance spectra of some naphthalene tetrachlorides

Abstract

Details of the carbon-13 n.m.r. spectra of four 1,2,3,4-tetrachlorotetralins (naphthalene tetrachlorides) and of three 1,2,3,4-tetrachloro-2-methyltetralins are presented. Chemical shifts of the signals attributable to the individual alicyclic and aromatic carbon atoms have been recorded and as far as possible identified by conventional methods; ¹J_{C, H} coupling constants have also been recorded. Several different types of ²J_{C, H} and ³J_{C, H} coupling constants have been identified from the details of the single resonance and partly decoupled high-resolution spectra. The results are discussed in relation to the known stereochemistry of these compounds.