1. CN− bond length in e+CN−: contrast with H+CN−
2. CN? abstraction from cyano compounds by positrons
3. D.F. Shriver, P.W. Atkins, C.H. Langford, Inorganic Chemistry, 2nd edn., Oxford University Press, Oxford, 1994, p. 162.
4. D.R. Lide (Ed.) Handbook of Chemistry and Physics, 76th edn., CRC Press, Boca Raton, Fl, 1995–1996, pp. 10–180, 10–182.
5. Photoelectron spectroscopy of CN−, NCO−, and NCS−