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SUMMARY:Chirality in NMR Spectroscopy - Professor David Buckingham FRS (Un
 iversity of Cambridge)
DTSTART:20140514T131500Z
DTEND:20140514T141500Z
UID:TALK52020@talks.cam.ac.uk
CONTACT:Aron Cohen
DESCRIPTION:Unlike other forms of spectroscopy\, NMR is blind to chirality
  since the spectra of a molecule and its mirror image are identical unless
  the solvent is chiral. However\, a chiral solute will produce a precessin
 g electric polarization\, in addition to the precessing nuclear magnetizat
 ion\, following a pi/2 pulse. The effect\, due to the nuclear magnetic shi
 elding polarizability\, is equal and opposite for a molecule and its mirro
 r image but is small and has not yet been observed. It will be shown that 
 a large enhancement of the effect occurs in dipolar solutes through partia
 l orientation of the permanent dipole by means of the antisymmetric part o
 f the nuclear magnetic shielding tensor.   The electric dipole precesses w
 ith the nuclear magnetic moment and produces a much larger temperature-dep
 endent electric polarization with better prospects of detection.
LOCATION:Department of Chemistry\, Cambridge\, Unilever lecture theatre
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