Arsenic–π Interactions Stabilize a Self-Assembled As2L3 Supramolecular Complex


  • The authors thank Prof. Michael M. Haley for helpful discussions. Support from the University of Oregon for funding of this research is gratefully acknowledged. The purchase of the X-ray diffractometer was made possible by a grant from the National Science Foundation (CHE-0234965).


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An As2L3metallocryptand is the result of a new predictive design strategy for forming self-assembled supramolecular arsenic complexes. The assembly is remarkably stable to a variety of competing metal ions, harsh acid, and excess ligand. X-ray crystallographic studies and density functional calculations suggest that a strong arsenic–π interaction adds stability to the structure.