It is well-known that benzophenone (BP) in the triplet state is potentially capable of abstracting a hydrogen atom from the HC (X) R1R2 linkage of various reactants. Triplet-state BP (3BP*) can undergo the H-atom abstraction at reasonable rate constants for reactants possessing electron-donating groups, eg, primary and secondary alcohols, aliphatic and aromatic amines, ethers, and hydrocarbons (X) OH, RO, NH2, RNH, R2N, alkyl, or aryl; R1 ...