Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 9, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202115468
Keywords
Convergence; Coordination cage; Fluxional molecule; Host-guest chemistry; Self-assembly
Categories
Funding
- Australian Research Council [DE190100327]
- New Zealand Marsden Fund (Fast Start Grant) [15-MAU-154]
- AINSE Honours Scholarship
- Australian Research Council [DE190100327] Funding Source: Australian Research Council
Ask authors/readers for more resources
A fluxional bis-monodentate ligand, based on the bullvalene molecule, self-assembles with M2+ to produce complex coordination cages. Guest-exchange simplifies the system, leading to a mixture of 38 diastereoisomers. NMR spectroscopy and DFT calculations elucidate the isomerization pathway.
A fluxional bis-monodentate ligand, based on the archetypal shape-shifting molecule bullvalene, self-assembles with M2+ (M = Pd2+ or Pt2+) to produce a highly complex ensemble of permanently fluxional coordination cages. Metal-mediated self-assembly selects for an M2L4 architecture while maintaining shape-shifting ligand complexity. A second level of simplification is achieved with guest-exchange; the binding of halides within the M2L4 cage mixture results in a convergence to a cage species with all four ligands present as the B isomer. Within this confine, the reaction graph of the bullvalene is greatly restricted, but gives rise to a mixture of 38 possible diastereoisomers in rapid exchange. X-ray crystallography reveals a preference for an achiral form consisting of both ligand enantiomers. Through a combination of NMR spectroscopy and DFT calculations, we elucidate the restricted isomerisation pathway of the permanently fluxional M2L4 assembly.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available