List of retained names of inorganic oxoanions

Retained names for inorganic ions are given, along with the corresponding systematic names, in the 2005 edition of Nomenclature of Inorganic Chemistry (the Red Book). The most important of these are the oxoanions, listed below: other retained names include cyanate for OCN⁻ [nitridooxidocarbonate(1−)] and fulminate for the isomeric ONC⁻ [carbidooxidonitrate(1−)].

Any common inorganic anion can be named by additive nomenclature to give a systematic name.

Retained name	Formula	Additive name
Arsonite	AsHO22−	hydridodioxidoarsenate(2−)
Arsonate	AsHO32−	hydridotrioxidoarsenate(2−)
Arsinite	AsH2O−	dihydridooxidoarsenate(1−)
Arsinate	AsH2O2−	dihydridodioxidoarsenate(1−)
Arsenite Arsorite	AsO33−	trioxidoarsenate(3−)
Arsenate Arsorate	AsO43−	tetraoxidoarsenate(3−)
Metaborate	(BO2−)n	catena-poly[(oxidoborate-µ-oxido)(1−)]
Borate	BO33−	trioxidoborate(3−)
Hypobromite	BrO−	oxidobromate(1−)
Bromite	BrO2−	dioxidobromate(1−)
Bromate	BrO3−	trioxidobromate(1−)
Perbromate	BrO4−	tetraoxidobromate(1−)
Hydrogencarbonate	HCO3−	hydroxidodioxidocarbonate(1−)
Carbonate	CO32−	trioxidocarbonate(2−)
Hypochlorite	ClO−	oxidochlorate(1−)
Chlorite	ClO2−	dioxidochlorate(1−)
Chlorate	ClO3−	trioxidochlorate(1−)
Perchlorate	ClO4−	tetraoxidochlorate(1−)
Chromate	CrO42−	tetraoxidochromate(2−)
Dichromate	Cr2O72−	µ-oxido-bis(trioxidochromate)(2−)
Phosphonate	PHO32−	hydridotrioxidophosphate(2−)
Hydrogenphosphite	HPO32−	hydroxidodioxidophosphate(2−)
Hydrogensulfite	HSO3−	hydroxidodioxidosulfate(1−)
Hydrogenphosphate	HPO42−	hydroxidotriioxidophosphate(2−)
Hydrogensulfate	HSO4−	hydroxidotrioxidosulfate(1−)
Phosphinate	PH2O2−	dihydridodioxidophosphate(1−)
Dihydrogenborate	H2BO3−	dihydroxidooxidoborate(1−)
Hydrogenphosphonate	PH2O3−	hydridohydroxidodioxidophosphate(1−)
Dihydrogenphosphite	H2PO3−	dihydroxidooxidophosphate(1−)
Dihydrogenphosphate	H2PO4−	dihydroxidodioxidophosphate(1−)
Diphosphonate	P2H2O32−	µ-oxido-bis(hydridodioxidophosphate)(2−)
Hypoiodite	IO−	oxidoiodate(1−)
Iodite	IO2−	dioxidoiodate(1−)
Iodate	IO3−	trioxidoiodate(1−)
Periodate	IO4−	tetraoxidoiodate(1−)
Orthoperiodate	IO65−	hexaoxidoiodate(5−)
Permanganate	MnO4−	tetraoxidomanganate(1−)
Manganate(VI)	MnO42−	tetraoxidomanganate(2−)
Manganate(V)	MnO43−	tetraoxidomanganate(3−)
Nitrite	NO2−	dioxidonitrate(1−)
Nitrate	NO3−	trioxidonitrate(1−)
Peroxynitrite	NO3−	oxidoperoxidonitrate(1−)
Peroxynitrate	NO4−	dioxidoperoxidonitrate(1−)
Phosphite	PO33−	trioxidophosphate(3−)
Metaphosphate	(PO3−)n	catena-poly[(dioxidophosphate-µ-oxido)(1−)]
Phosphate	PO43−	tetraoxidophosphate(3−)
Peroxyphosphate	PO53−	trioxidoperoxidophosphate(3−)
Hypodiphosphate	P2O64−	bis(trioxidophosphate)(P—P)(4−)
Diphosphate	P2O74−	µ-oxido-bis(trioxidophosphate)(4−)
Peroxydiphosphate	P2O84−	µ-peroxido-bis(trioxidophosphate)(4−)
Sulfite	SO32−	trioxidosulfate(2−)
Sulfate	SO42−	tetraoxidosulfate(2−)
Peroxysulfate	SO52−	trioxidoperoxidosulfate(2−)
Thiosulfate	S2O32−	trioxido-1κ3O-disulfate(S—S)(2−)
Dithionite	S2O42−	bis(dioxidosulfate)(S—S)(2−)
Dithionate	S2O62−	bis(trioxidosulfate)(S—S)(2−)
Disulfate	S2O72−	µ-oxido-bis(trioxidosulfate)(2−)
Peroxydisulfate	S2O82−	µ-peroxido-1κO,2κO'-bis(trioxidosulfate)(2−)
Tetrathionate	S4O62−	bis[(trioxidosulfate)sulfate](S—S)(2−)
Selenite	SeO32−	trioxidoselenate(2−)
Selenate	SeO42−	tetraoxidoselenate(2−)
Metasilicate	(SiO32−)n	catena-poly[(dioxidosilicate-µ-oxido)(2−)]
Silicate	SiO44−	tetraoxidosilicate(4−)
Disilicate	Si2O76−	µ-oxido-bis(trioxidosilicate)(6−)
Tellurate	TeO42−	tetraoxidotellurate(2−)
Orthotellurate	TeO66−	hexaoxidotellurate(6−)