A CP-MAS NMR study of n-alkanes included in urea: conformational dependences of the substituent effects for n-substituted alkanes

Abstract

Solid state CP-MAS NMR spectra have been obtained for the urea inclusion complexes of the substituted alkanes; tridecane, myristyl alcohol, dioctylamine, myristic acid, and stearonitrile. Changes in the substituent effects on the chemical shift values, on inclusion complex formation, from those of solution NMR spectra are discussed on the assumption that long-chain molecules in urea inclusion complexes have the all- trans conformation.