Bismuth diphenylphosphanides Bi(NON )(PPh ) (NON =[O(SiMe NR) ], R=tBu, 2,6-iPr C H , Aryl) undergo facile decomposition via single-electron processes to form reduced Bi and P species. The corresponding derivatives Bi(NON )(PCy ) are stable. Reaction of the isolated Bi radical Bi(NON ) with white phosphorus (P ) proceeds with the reversible and selective activation of a single P-P bond to afford the bimetallic μ,η -bicyclo[1.1.0]tetraphosphabutane compound.
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