Page 42 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)
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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.)
                                                                                   5
                       (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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