David W. Knisely . . . . . . "If you aren't having fun in this hobby, you aren't doing it right." Hyde Memorial Observatory http://www.hydeobservatory.info Prairie Astronomy Club http://www.prairieastronomyclub.org
Quote:Certain derivatives of cyanogen are also called "cyanogen" even though they contain only one CN group. For example cyanogen bromide has the formula NCBr.
Quote:And a single CN by itself is consistent with that usage.
Quote:But if you want to use "cyanogen" only to refer to NCCN - that's ok with me.
Quote: It's just recognizing an established convention used the same way in many different domains.
Quote:I notice that right now SpaceWeather.com is still quoting "Cyanogen" as the source of the green hue in ISON
Quote:I believe the association of cyanide with "dark blue" is because it was first synthesized from a colored material.
Quote:Prussian blue lent its name to prussic acid (hydrogen cyanide), which was derived from it. In Germany, hydrogen cyanide was called Blausäure ("blue acid"), and Joseph Louis Gay-Lussac gave cyanide its name, from the Greek word kyanos, ("blue"), because of the color of Prussian blue.
Quote:and to deduce that at some point someone made a mistake, and such a compelling tidbit spread like wildfire.
Quote:Is it wrong?