Peroxides

Peroxides are a group of compounds with the structure R−O−O−R, where R is any element. The O−O group in a peroxide is called the peroxide group or peroxy group (sometimes called peroxo group or peroxyl group).
Greenwood & Earnshaw 1997: Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8
Smith & March 2007: Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th ed.), New York: Wiley-Interscience, ISBN 978-0-471-72091-1…