Page 77 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)
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IR-5        Compositional Nomenclature, and

                       Overview of Names of Ions and Radicals






                       C O N T E N T S


                       IR-5.1 Introduction
                       IR-5.2 Stoichiometric names of elements and binary compounds
                       IR-5.3 Names of ions and radicals
                         IR-5.3.1 General
                         IR-5.3.2 Cations
                           IR-5.3.2.1 General
                           IR-5.3.2.2 Monoatomic cations
                           IR-5.3.2.3 Homopolyatomic cations
                           IR-5.3.2.4 Heteropolyatomic cations
                         IR-5.3.3 Anions
                           IR-5.3.3.1 Overview
                           IR-5.3.3.2 Monoatomic anions
                           IR-5.3.3.3 Homopolyatomic anions
                           IR-5.3.3.4 Heteropolyatomic anions
                       IR-5.4 Generalized stoichiometric names
                         IR-5.4.1 Order of citation  o f  e lectropositive and electronegative constituents
                         IR-5.4.2 Indication of proportions of constituents
                           IR-5.4.2.1 Use of multiplicative prefixes
                           IR-5.4.2.2 Use of charge and oxidation numbers
                           IR-5.4.2.3 Multiple monoatomic constituents vs. h omopolyatomic  c onstituents
                       IR-5.5 Names of (formal) addition compounds
                       IR-5.6 Summary
                       IR-5.7 References



           IR-5.1      I N T R O D U C T I O N

                       Compositional nomenclature is formally based on composition, not structure, and may thus
                       be the (only) choice if little or no structural information is available or a  m  inimum of
                       structural i nformation is to be conveyed.
                          The simplest type of compositional name is a stoichiometric name, which is just
                       a  r eflection of the empirical formula  ( Section IR-4.2.1) or the molecular formula (Section
                       IR-4.2.2) of the compound. In stoichiometric names, proportions of constituent  e lements
                       may be indicated in several ways, using m  ultiplicative p refixes, oxidation numbers or charge
                       numbers.
                          In some cases, a  c ompound may be regarded as composed of constituents that may
                       themselves be given  n ames of any of several types (including stoichiometric names); the


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