nitrenes

Synonym: aminylenes
https://doi.org/10.1351/goldbook.N04145
  1. The neutral compound HN: having univalent nitrogen, and its derivatives RN. Aminylenes is a recognized but less widely used synonym. Other names that have been used include aminediyls, @I02951@, @A00554@. They may exist in either a singlet or a triplet @ET07026@ (four spin-paired electrons, or two spin-paired and two with parallel spins, respectively), e.g. CH3N: methylnitrene.
  2. Until the 1960s, nitrenes had a totally different meaning: analogues of @N04164@ in which the double-bonded oxygen is replaced by double-bonded carbon, thus @A00565@.
Sources:
PAC, 1993, 65, 1357.(Revised nomenclature for radicals, ions, radical ions and related species (IUPAC Recommendations 1993)) on page 1357 [Terms] [Paper]
PAC, 1995, 67, 1307.(Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1350 [Terms] [Paper]
See also:
PAC, 1994, 66, 1077.(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1145 [Terms] [Paper]