Page 82 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

IR-5.3 C O M P O S I T I O N A L N O M E N C L A T U R E

6. sodium, sodide
7. potassium, p otasside

In one case, an abbreviated name has to be chosen: germanium, germide. The systematic

name ‘germanide’ designates the anion G eH 3 .
Some names of monoatomic anions are based on the root of the Latin element names.
In these the ending ‘um’ or ‘ium’ is replaced b y ‘ ide’.

Examples:
8. silver, argentum, argentide
9. gold, aurum, auride
10. copper, cuprum, cupride
11. iron, ferrum, ferride

12. lead, plumbum, plumbide
13. tin, stannum, stannide

All element names thus modified are included i n T able IX.

Charge numbers and radical dots may be added as appropriate to specify anions fully.

Examples:

14. O 2 oxide(2 ), or oxide
15. O * oxide( * 1 )
16. N 3 nitride(3 ), or nitride

IR-5.3.3.3 Homopolyatomic anions
Homopolyatomic anions are named by adding the charge number to the stoichiometric name
of the corresponding neutral species, i.e. the element name with the appropriate
multiplicative prefix. Again, a r adical dot may be added as appropriate.
In a f ew cases, non-systematic names are still acceptable alternatives.

Examples:
Systematic name Acceptable alternative name
*
1. O 2 or O 2 dioxide(1 ) o r s uperoxide
dioxide( * 1 )
2
2. O 2 dioxide(2 ) p eroxide

3. O 3 trioxide(1 ) o zonide

4. I 3 triiodide(1 )
*
5. Cl 2 dichloride( * 1 )
2
6. C 2 dicarbide(2 ) a cetylide

7. N 3 trinitride(1 ) a zide

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