SCHEDULED MAINTENANCE:
The reaction of Potassium carbonate with red selenium in acetone, in the presence of [PPN]Cl[PPN =(Ph3P)2N], at 23°C produces [PPN][Se5C(Se)COMe] in which the anion is shown by X-ray crystallography to consist of a six-membered Se5C ring in a chair conformation with significant endocyclic–exocyclic Se–Se interactions.
T. Chivers, M. Parvez, M. Peach and R. Vollmerhaus, J. Chem. Soc., Chem. Commun., 1992, 1539 DOI: 10.1039/C39920001539
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