amidogen

noun

1. (dated)The amino radical, •NH₂, the neutral form of the amide ion −NH₂⁻, regardable as the ammonia molecule with one of its hydrogen atoms removed.

   “.”

   “Chemical formulae: NH₂, *NH₂,\dot{}NH₂, \dot NH₂, NH₂*”

   “1860, John Joseph Griffin, The Chemistry of the Non-metallic Elements and Their Compounds, John Joseph Griffin, page 315, Ammonia is commonly called a base. It is more correct to call it a SALT, and to consider its components to be the radical amidogen NH₂, and the radical hydrogen =\ H.”

   “Again, if in phosgene gas COCl₂, we replace the two atoms of chlorine by peroxide of hydrogen, we obtain carbolic acid; whereas if we replace them by amidogen we get urea, as shown in the second line of the table.”