Page 81 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

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 I R-5.3

þ
5. SbF 4 tetrafluorostibanium (substitutive), or tetrafluoridoantimony(1þ)
or tetrafluoridoantimony(V) (both additive)
* þ
6. BH 3 boraniumyl (substitutive) or trihydridoboron( * 1þ) ( additive)

More examples are given i n T able IX.

IR-5.3.3 Anions

IR-5.3.3.1 Overview

An anion i s a monoatomic or polyatomic species having one o r m ore n egative c harges. The
charge on an anion can be indicated in the name b y u sing the charge number or, in the case
of an additively named anion, by the oxidation number(s) of the central atom or atoms.
Oxidation a nd charge numbers are discussed i n S ection IR-5.4.2.2.
The endings in anion n ames are ‘ide’ (monoatomic or homopolyatomic species,
heteropolyatomic species named from a p arent hydride), ‘ ate’ (heteropolyatomic species
named additively), and ‘ite’ (used i n a few names which are still acceptable but do not derive
from current systematic nomenclature). When there is no ambiguity, the charge number may
be omitted, as in Example 1 b elow. Parent hydride-based names do not carry charge
numbers because the name itself i mplies the charge (Examples 3 a nd 4 b elow).

Examples:
1. Cl chloride(1 ), or chloride
2
2. S 2 disulfide(2 )

3. PH 2 phosphanide
4. PH 2 phosphanediide
5. [CoCl 4 ] 2 tetrachloridocobaltate(2 ), or tetrachloridocobaltate(II)

6. NO 2 dioxidonitrate(1 ), or nitrite

IR-5.3.3.2 Monoatomic anions

The name o f a m onoatomic anion i s t he element name ( Table I) modified so as to carry the
anion designator ‘ide’, either formed by replacing the ending of the element name ( ‘en’,
‘ese’, ‘ic’, ‘ine’, ‘ium’, ‘ogen’, ‘on’, ‘orus’, ‘um’, ‘ur’, ‘y’ or ‘ygen’) by ‘ide’ or by directly
adding ‘ide’ as an ending to the element name.

Examples:

1. chlorine, chloride
2. carbon, carbide
3. xenon, xenonide
4. tungsten, t ungstide
5. bismuth, bismuthide

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