Page 124 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

IR-7.3 A D D I T I V E N O M E N C L A T U R E

such species. A gain, in some c ases substitutive names are also easily constructed, as
exemplified below.

The general procedure for naming a s ymmetrical dinuclear entity i s a s f ollows.
The ligands are represented in the usual way and the multiplicative affix ‘di’ is added
immediately before the name of the central atom. The name o f t he central element is
modified to the ‘ate’ form if the compound is an anion.
A b ond between t he two central atoms, if there is one, is indicated by adding to the name the
italicized s ymbols for those two atoms, separated by an ‘em’ dash and enclosed in parentheses.
In bridged dinuclear species, b ridging l igands are indicated by the Greek letter m, p laced
before the ligand name and separated from it by a h yphen. The w hole term, e.g. ‘m-chlorido’,
is separated from the rest of the name by hyphens. I f t he bridging ligand occurs more t han
once, multiplicative prefixes are employed ( see also Sections IR-9.1.2.10 a nd IR-9.2.5.2).

Examples:

1. [Et 3 PbPbEt 3 ] h exaethyldilead(Pb— P b) ( additive),
or hexaethyldiplumbane ( substitutive)
2. HSSH * dihydridodisulfate(S—S)( * 1 ) ( additive),
or disulfanuidyl (substitutive)

3. NCCN dinitridodicarbon(C — C)
4. NCCN * dinitridodicarbonate(C — C)( 1 )
*
5. (NC)SS(CN) bis(nitridocarbonato)disulfur(S — S),
or dicyanidodisulfur(S — S)
6. (NC)SS(CN) * bis(nitridocarbonato)disulfate(S—S)( * 1 ),
or dicyanidodisulfate(S — S)( * 1 )
7. OClO m-chlorido-dioxygen,
or dioxidochlorine
8.
Cl Cl Cl

Al Al

Cl Cl Cl
Al Cl (μ-Cl) 2
2
4
di-m-chlorido-tetrachloridodialuminium
A v ariant of the format in the above additive names involves starting with ‘bis’ and then
citing the name of the half-molecule o r i on in parentheses. Thus, Examples 1–6 and 8 b ecome:

Examples:

9. [Et 3 PbPbEt 3 ] b is(triethyllead)(Pb— P b)
10. HSSH * bis(hydridosulfate)(S — S)( * 1 )
11. NCCN bis(nitridocarbon)(C — C)
12. NCCN * bis(nitridocarbonate)(C—C)( 1 )
*

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