Carbon-13 NMR spectra of some o-carbonyl benzeneselenenyl derivatives

The 13C NMR signals have been assigned for some ortho-carbonyl benzene-selenenyl derivatives, COR.C6H4. Sex, where R = H, CH3, OCH3 and OC2H5 and X = Cl, Br, CN, SCN, SeCN and CH3. The effects of the nature of R and X have been discussed.