Possible Observation of Parity Nonconservation by High-Resolution NMR

In achiral conditions, a difference in the NMR spectra of the d, l forms of a chiral molecule should be a manifestation of the never observed parity nonconservation in molecules. The involved NMR parameters depend on the never measured nuclear-spin-dependent PNC potential. Calculations performed with a relativistically parameterized extended Hückel method show a difference of a few mHz in the metal resonance frequency of enantiomers, containing Pt or Pb. A discussion of the various possible limiting factors shows that such a difference could be observed.