peroxidelike

Peroxidelike is a descriptive term used in chemistry to refer to substances that resemble peroxides in structure or in their chemical behavior. It is not a formal name for a single class, but a way to group materials that feature peroxide-like O–O chemistry or that generate reactive oxygen species through cleavage of an O–O bond. The label can apply to organic compounds such as hydroperoxides (ROOH), dialkyl or diaryl peroxides (ROOR′ or RCO–O–OR′), as well as inorganic peroxides like hydrogen peroxide (H2O2) and alkali metal peroxides (Na2O2). Peroxidelike species can also give rise to peroxyl radicals (ROO•) during their reactions, which contribute to their oxidizing behavior.

Structural and energetic features commonly associated with peroxidelike substances include an O–O bond that is comparatively weak relative to many other single bonds. This predisposes the molecule to homolytic cleavage under heat, light, or catalytic conditions, producing radical intermediates such as RO• or HO•. The presence of an O–O bond or a closely related peroxide linkage often governs reactivity, including initiation of polymerization, oxidation of substrates, and, in some cases, explosive or violent decomposition if not handled properly.

Applications and considerations: peroxidelike compounds are used as radical initiators in polymer chemistry, oxidants in organic synthesis, and disinfectants or bleaching agents in various industries. They require careful handling and storage due to sensitivity to heat, shock, or friction, and their decomposition can be hazardous. Typical safety practices emphasize controlled temperatures, inhibitors to prevent runaway reactions, and appropriate containment.

See also: peroxide, hydroperoxide, peroxyl radical, radical initiator.