In organic chemistry, the diazo group is an organic moiety consisting of two linked nitrogen atoms at the terminal position.  Overall charge-neutral organic compounds containing the diazo group bound to a carbon atom are called diazo compounds or diazoalkanes and are described by the general structural formula . The simplest example of a diazo compound is diazomethane, .  Diazo compounds () should not be confused with azo compounds () or with diazonium compounds ().