:Well there is not standalone article yet, and only a short paragraph.  We have fairly poor coverage of groups of chemicals or functional groups. but I don't see why you cannot have it. Earlier today I was looking for info on the more obscure -N=S=O group which might be called "iminooxosulphurane", but I am not too sure about that. We don't have any yet for silicon, arsenic or selenium.  Currently the order is reasonable going from well known to obscure.