Red_Book_2005

IR-2.8
Example:
15. I PtMe 3
Me 3 Pt
I
Me 3 Pt
I
PtMe 3
[{Pt(m 3 -I)Me3 } 4 ] tetra-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 molecule. The arabic numeral is enclosed in
parentheses immediately following the name.
Examples:
16. B 2 H 6
17. B 10H 14
diborane(6)
decaborane(14)
(e) As aright superscript to the symbol k ,toindicate the number of donor atoms of a
particular type bound to acentral atom or central atoms (see Sections IR-9.2.4.2 and IR-
10.2.3.3).
(f) As aright superscript to the symbol Z ,toindicate the hapticity of aligand. (See Sections
IR-9.2.4.3 and IR-10.2.5.1.)
(g) In polynuclear structures, arabic numerals are part of the CEP descriptor 5 used to identify
polyhedral shapes. (See also Section IR-9.2.5.6.)
(h) In the stoichiometric descriptor terminating the name ofa(formal) addition compound
(see Section IR-5.5).
Example:
18. 8H2 S·46H2 O hydrogen sulfide—water (8/46)
(i) As aright superscript, to indicate the non-standard bonding number in the l convention.
(See Section IR-6.2.1.)
Example:
19. IH5
l 5 -iodane
(j) To describe the coordination geometry and configuration of ligands around acentral
atom using polyhedral symbols and configuration indexes (see Sections IR-9.3.2 and
IR-9.3.3).
I
GRAMMAR
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