A chiral molecular square with metallo-corners for enantioselective sensing

J Am Chem Soc. 2002 May 1;124(17):4554-5. doi: 10.1021/ja0256257.

Abstract

A family of chiral molecular squares based on fac-Re(CO)3Cl metallocorners and enantiopure atropisomeric bipyridine bridging ligands (L1-4) have been synthesized in high yields by refluxing ClRe(CO)5 and L1-4 in 1:1 molar ratio. These novel chiral metallocycles have been characterized by 1H and 13C{1H} NMR, UV-vis, luminescence, and circular dichroism (CD) spectroscopies, FAB mass spectrometry, and microanalysis. Molecular square 4 which contains four 1,1'-bi-2-naphthol functionalities exhibits interesting enantioselective luminescence quenching by 2-amino-1-propanol. This research illustrates the potential of generating novel functional materials based on supramolecular chemistry.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Circular Dichroism
  • Luminescent Measurements
  • Naphthols / chemistry
  • Organometallic Compounds / chemistry*
  • Pyridines / chemical synthesis
  • Pyridines / chemistry
  • Stereoisomerism

Substances

  • BINOL, naphthol
  • Naphthols
  • Organometallic Compounds
  • Pyridines