Paul V. Demarco

Cyclohepta-amylose inclusion complexes. A proton magnetic resonance study

Proton magnetic resonance provides direct evidence for the inclusion nature of cyclohepta-amylose complex formation with aromatic substrates.

19F NMR study of intramolecular---hydrogen bonding in ortho-trifluoromethylphenol

Abstract From both solvent shift and dilution studies, intramolecular OH⋯F hydrogen bonding is indicated in ortho -trifluoromethylphenol (I). Extended Huckel calculations further support these findings and demonstrate the potential of this method in the analysis of hydrogen-bonding phenomena.

13 C and 220 MHz analysis of camphor and thiocamphor. Anisotropy and solvent effects of the cs bond

Comparative investigation of the 13C and 1H (220 MHz) n.m.r. spectra of camphor and thiocamphor provides information regarding the electronic nature of the CS bond.

Structural studies on penicillin derivatives: 13C nuclear magnetic resonance studies of some penicillins and related sulphoxides

13 C Chemical shift assignments are made for several penicillin and penicillin sulphoxide derivatives: shifts for γ-situated carbons are best explained if a sizeable steric effect is attributed to the S→O bond.