Author(s): Salim S. Al-Showiman
Article publication date: 1987-08-01
Vol. 5 No. 1 (yearly), pp. 175-184.
148
Keywords
carbon 13, electron, chemistry
Abstract
Carbon-13 chemical shift assignments are reported for some N-tertbutylimines bearing ortho-substituted C-phenyl rings. The influence of electronic and stereochemical effects on the l3C signal positions were inspected. The variation of the 13C chemical shifts allows calculation of the substituent chemical shift (SCS) effects. The results indicate that electron withdrawing substituents cause up field shifts in the position of the C=N resonance.