Abstract
Chiral molecular squares 1-12 based on [M(dppe)]2+ metallocorners (M = Pd or Pt, and dppe = bis-(diphenylphosphino)ethane) and new angular bipyridine bridging ligands derived from the 1,1′-binaphthyl framework were readily assembled and characterized by a variety of techniques including infrared, UV-vis, circular dichroism (CD), and NMR spectroscopy, and ESI mass spectrometry. All these chiral metallocycles are highly luminescent in solution at room temperature with quantum efficiency of 0.06-0.63. Interestingly, when equal molar enantiopure molecular squares of opposite handedness were mixed in solution, a new meso dimeric metallocycle with C 2 symmetry formed. This result indicates the lability of the M-pyridyl bonds in these metallocycles, which may hinder their applications in many enantioselective processes.
Original language | English |
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Pages (from-to) | 6579-6588 |
Number of pages | 10 |
Journal | Inorganic Chemistry |
Volume | 43 |
Issue number | 21 |
DOIs | |
Publication status | Published - 2004 Oct 18 |
Externally published | Yes |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry