Azane names

An acyclic amine terminally substituted by a cyclic system is named either substitutively or conjunctively (radicofunctional and azane names may be obtained as described above). 

Several of the names for the parent hydrides, although systematic, are not in general use, and alternatives are approved these are azane (ammonia is sanctioned by wide usage), oxidane (water) and sulfane (hydrogen sulfide). 

Department of Chemistry, University of Massachusetts, Amherst, MA 01003. Cyclodiphosph(lII)azanes is commonly used nomenclature, but the more systematic ring name l,3-di>ter(-butyl-2,4-dichloro-l,3,2,4-diazadiphosphetidine is used for indexing purposes. 

For primary amines, where the amine is not the principal characteristic group, the the prefix amino-" is used. For example 4-aminobenzoic acid where the carboxylic acid is the principal characteristic. Otherwise, the suffix -amine is used with with either the parent hybride orthe R group substituent name. Example ethanamine or ethylamine. Alternatively, the suffix -azane can be appended to the R group substituent name Example propylazane. 

NH3 NHj, azane (parent hydride name), amine (parent name for certain organic derivatives), trihydridonitrogen ammonia NHj", azaniumyl, trihydridonitrogen) 1 +) -NHj azaniumyl ammonio azanuidyl, trihydridonih ate( 1—) NH, ammine... 

Name Ammonia (azane) Phosphane (phosphine) Arsane (arsine) Stibane (stibine) Bismuthane... 

Ammonia is the accepted trivial name for NH3. Azane is the lUPAC parent name for NH3 and is used fra- naming derivatives. Phosphane, aisane and stibane are the lUPAC systematic names for PH3, ASH3 and SbH3. Phosphine, arsine and stibine are still in use but are no longer accepted by the lUPAC. 

Both hydrogen isocyanide and methanidylidyneazanium are correct lUPAC names for HNC. Currently there is no Preferred lUPAC name. The second one is according to the substitutive nomenclature rules, derived from the parent hydride azane (NH3) and the anion methanide (C). 

In principle, all radicals and ions can nowadays be named in a uniform and totally systematic manner on the basis of the operational suffixes (and prefixes derived therefrom) compiled in Table 11. Obviously, standardization of the nomenclature for such derived species can be fully congruous only if the names of the underlying parent structures themselves are generated in a thoroughly systematic way, e.g. oxidane, dioxidane, azane, diazane, etc. Hence, in the subsequent sections fully systematic names are always given as well as the conventional trivial/traditional designations. 

Secondary and tertiary amines are in most cases still named radicofunc-tionally, in a manner that can easily be transformed into a substitutive naming mode based on the parent hydride name azane. Within the boundaries of conventional substitutive nomenclature, amines of that sort are interpreted as products of N-substitution of the most serior primary amine present. 

Imines form the functional compound class of lowest rank and are hence named as such only when no N-organyl substituents are present otherwise they are named as. ..ylidenamines. If more senior functions are to be respected. ..imino prefixes are used. Totally systematic azane-based names would again bring about considerable simplifications. 

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