Page 42 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

IR-2.8 G R A M M A R

Example:
15.
I PtMe 3
Me Pt I
3
Me Pt I
3
I PtMe 3

[{Pt(m 3 -I)Me 3 } 4 ] t etra-m 3 -iodido-tetrakis[trimethylplatinum(IV)]

(d) In the nomenclature of boron compounds (see Chapter IR-6.2.3), to indicate the number
of hydrogen atoms in the parent borane m olecule. The arabic numeral is enclosed in
parentheses immediately following the name.

Examples:

diborane(6)
16. B 2 H 6
decaborane(14)
17. B 10 H 14
(e) As a r ight superscript to the symbol k, t o i ndicate the number of donor atoms of a
particular t ype bound to a c entral atom or central atoms (see Sections IR-9.2.4.2 and IR-
10.2.3.3).

(f) As a r ight superscript to the symbol Z, t o i ndicate the hapticity of a l igand. (See Sections
IR-9.2.4.3 and IR-10.2.5.1.)
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(g) In polynuclear structures, arabic numerals are part of the CEP descriptor used to identify
polyhedral shapes. (See also S ection IR-9.2.5.6.)

(h) In the stoichiometric descriptor terminating the name o f a (formal) addition compound
(see Section IR-5.5).

Example:

18. 8H 2 S·46H 2 O h ydrogen sulfide—water (8/46)

(i) As a r ight superscript, to indicate the non-standard bonding number in the l convention.
(See Section IR-6.2.1.)

Example:

5
l -iodane
19. IH 5
(j) To describe t he coordination geometry and configuration of ligands around a central
atom using polyhedral symbols and configuration indexes (see Sections IR-9.3.2 and
IR-9.3.3).

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