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Title: Communication: Permanent dipoles contribute to electric polarization in chiral NMR spectra

Nuclear magnetic resonance spectroscopy is blind to chirality because the spectra of a molecule and its mirror image are identical unless the environment is chiral. However, precessing nuclear magnetic moments in chiral molecules in a strong magnetic field induce an electric polarization through the nuclear magnetic shielding polarizability. This effect is equal and opposite for a molecule and its mirror image but is small and has not yet been observed. It is shown that the permanent electric dipole moment of a chiral molecule is partially oriented through the antisymmetric part of the nuclear magnetic shielding tensor, causing the electric dipole to precess with the nuclear magnetic moment and producing a much larger temperature-dependent electric polarization with better prospects of detection.
Authors:
 [1]
  1. Department of Chemistry, Cambridge University, Cambridge CB2 1EW (United Kingdom)
Publication Date:
OSTI Identifier:
22253646
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHIRALITY; DETECTION; ELECTRIC DIPOLE MOMENTS; ELECTRIC DIPOLES; ENANTIOMORPHS; MAGNETIC FIELDS; MAGNETIC SHIELDING; NMR SPECTRA; NUCLEAR MAGNETIC MOMENTS; NUCLEAR MAGNETIC RESONANCE; POLARIZABILITY; POLARIZATION; SPECTROSCOPY; TEMPERATURE DEPENDENCE