Page 117 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

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

3. MeNH methylazanide, or methylamide, or
methanaminide (all substitutive, see Section
P-72.2 of Ref. 1)
4.
1 2 3 4 5 6 7 8 9

SnH 2 O Sn H 2 O Sn H 2 O Sn H 2 O Sn Cl 3
9,9,9-trichloropentastannoxan-1-ide
5. [BH 3 CN] cyanoboranuide (from borane),
or cyanidotrihydridoborate(1 ) ( additive)
5
6. [PF 6 ] hexafluoro-l -phosphanuide (from phosphane),
or hexafluoridophosphate(1 ) ( additive)

IR-6.4.7 Radicals a nd substituent groups

Radicals and substituent groups derived from parent hydrides by removal of one or more
hydrogen atoms are named by modifying the parent hydride name as follows:

(i) removal of one hydrogen atom: add suffix ‘yl’ (eliding final ‘e’ of parent hydride
name);
(ii) removal of two or more hydrogen atoms: add suffix ‘yl’ with appropriate
multiplicative prefix (no vowel elision).
The suffix ‘ylidene’ is used on a s ubstituent group if a d ouble bond is implied when a
skeletal atom has formally l ost two hydrogen atoms. If a t riple bond is implied, the ending
‘ylidyne’ is used. With these endings, the ending ‘e’ of the parent hydride name is again elided.
For radicals, if two hydrogens are removed from the same atom the suffix ‘ylidene’ is used.
Locants m ay be needed t o i ndicate the skeletal atoms from which hydrogen atoms have
been removed. Such locants are placed immediately before the suffix. When numbering the
structure, t he positions where hydrogen atoms were removed take precedence o ver
unsaturation, as in Example 9 b elow.
Radicals may also be named using additive nomenclature, see Section IR-7.1.4 and
examples in subsequent sections of Chapter IR-7.

Examples:

1. NH 2 * azanylidene
*
2. PH 2 and H 2 P phosphanyl
3. PH 2 * and HP¼ phosphanylidene
4. HP5 phosphanediyl
5. P phosphanylidyne
* 3
6. H 2 Br and H 2 Br l -bromanyl
*
7. H 2 NNH and H 2 NNH diazanyl or hydrazinyl
*
8. * HNNH and HNNH diazane-1,2-diyl or
hydrazine-1,2-diyl
|
* *
9. HP¼NP NHPH and HP¼NPNHPH triphosphaz-4-ene-1,3-diyl

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