A crystallographic map of chiral recognition in π complexes of aromatic aldehydes and a chiral transition metal Lewis acid: enantioface binding selectivities in solution correlate to distances between metal and carbon stereocentres in the solid state
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The title claim is established with five π-aromatic aldehyde complexes [(η5-C5H5)Re(NO)(PPh3) (η2-O=CHAr)]+ X-; electronegative aryl substituents give shorter rhenium-carbon bond lengths and higher binding selectivities, providing the first easily conceptualized mechanism for an electronic effect upon chiral recognition.
author list (cited authors)
Boone, B. J., Klein, D. P., Méndez, N. Q., Seyler, J. W., Arif, A. M., & Gladysz, J. A.