Page 116 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

IR-6.4 S U B S T I T U T I V E N O M E N C L A T U R E

4. H 2 NN 2 diazane-1,1-diide, or hydrazine-1,1-diide
5. HNNH diazane-1,2-diide, or hydrazine-1,2-diide

6. SiH 3 silanide

7. GeH 3 germanide

8. SnH 3 stannanide
9. SH sulfanide
10. HNN¼NH triaz-2-en-1-ide

Names of anions derived by formal loss of one or more hydrons f rom hydroxy groups and
their chalcogen a nalogues (characterized by suffixes such as ‘ol’ and ‘thiol’) are formed by
adding the ending ‘ate’ to the appropriate name.

Examples:

11. SiH 3 O silanolate
12. PH 2 S phosphanethiolate

The anion in Example 12 may also be named as a d erivative of phosphinothious acid,
H 2 PSH, thus giving the name ‘phosphinothioite’. This type of name is used as the basis for
naming organic derivatives of H 2 PSH. (See discussion of inorganic acids in Chapter I R-8.)

IR-6.4.5 Anions derived from parent hydrides by addition of one or more hydride ions

The addition of a h ydride ion to a p arent hydride is designated by the ending ‘uide’ (see
Section P-72.3 of Ref. 1). Rules regarding locants are analogous to the rules for the ‘ide’
suffix (see Section IR-6.4.4). For compounds of this kind, additive names (Chapter IR-7) are
common and acceptable alternatives.

Example:

1. [BH 4 ] boranuide (from b orane), or
tetrahydridoborate(1 ) ( additive)

IR-6.4.6 Substituted anions

Names of substituted derivatives of anions are formed from parent hydride names modified
as above (see Sections IR-6.4.4 and IR-6.4.5) by further adding appropriate prefixes for the
substituents. When numbering t he structure, the position where a h ydron was removed or a
hydride ion was added takes precedence over the positions with substituents, as in Example
4 b elow. In many c ases, additive names are common and acceptable alternatives.

Examples:
trichlorostannanide (from stannane),
1. SnCl 3
or trichloridostannate(1 ) ( additive)
2. MePH methylphosphanide

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