The structure of the proton skeleton in 1,3-butadieneiron Tricarbonyl as determined from the NMR spectra of oriented molecules

Abstract

1H NMR spectra of 1,3-butadieneiron tricarbonyl oriented in a nematic liquid crystal solvent have been analysed and used to derive the structure of the proton skeleton, which is found to be non-planar. The distance of the anti protons from the plane defined by the remaining four protons is 0.77 ± 0.06 ±.