Chemiluminescence in the interaction of organoboron peroxides with water

Chemiluminescence (CL) was detected in the reactions of organoboron peroxides, intermediate products of the oxidation of 9-borabicyclo[3.3.1]nonane (1) by water. Triplet cyclooctanone emitting at λ=420±15 nm is the emitter of CL. A mechanism for the formation of the excited ketone was suggested. The interaction of water with other components of the reaction mixture (the initial boron hydride I, end products of its oxidation, and a number of intermediate radicals) are not accompanied by CL.