Steric and mesomeric interaction factors on the electronic spectra of some nitrocresols

The electronic absorption spectra of some mono and di-substituted phenols OHC[6]H[3]XY, where X = NO[2] and Y= CH[3], in 90 percent aqueous ethanol and also in presence of 0.1 N NaOH or 0.1 N HC1 solutions were studied. The spectral behaviour in relation to the different interaction factors between the phenoxy group and the substituent were discussed

13C NMR spectroscopy charge-transfer complexes of some hetero compounds

The 13C-NMR spectroscopy has been studied for a series of some nitrogen heterocyclic picrates. The 13C chemical shifts due to different carbons of picric acid moiety have been assigned. The results indicated the type of interaction within the addition compounds

Spectra structure correlation of some p-Nitrobenzylphenyl ethers

Infrared and NMR spectra of some mono- and di-substituted p- nitrobenzylphenyl ethers were studied to investigate the effect of substitution, in the phenyl moiety, on the spectral features of the molecule. Bands due to gamma C-H of benzylic protons were assigned and correlated with the electron releasing ability of the substituents. The relative chemical shifts of the CH2 in the HNMR spectra of the benzylphenyl ethers [delta delta] in DMSO solutions were also correlated with the substituent constant