Name Interpretation

R-6.4 4,4'-Dinitro-2,3'-[ethylenebis(sulfane-

This example illustrates a name involving an assembly of identical units.

(a) The suffix '-carbaldehyde' indicates the presence of the principal group attached to the parent hydride 'cyclohexane' giving the structure and numbering of cyclohexanecarbaldehyde shown as (I), below. The multiplicative prefix 'di-' denotes the presence of two identical units, and the locants '2,3'' indicate attachment of a bivalent linking group at position 2 of one cyclohexane ring and position '3' of a second cyclohexane ring (priming of locants differentiates two or more identical units of an assembly). The structure and numbering of the resulting partial structure is shown as (II).

(b) The prefix 'ethylenebis(sulfanediyl)' denotes a bivalent linking group made up of a central ethylene group attached to two sulfur atoms, thus, .

(c) The prefix 'nitro-', with its multiplicative prefix 'di-' and the locants '4,4'', indicates the presence of two nitro groups, , one attached to position 4 of one cyclohexane ring and one to position 4' of the other.

(d) The structure of the complete compound is therefore:

R-6.5 1-Methylbutyl 4-(2-acetyl-2-ethylhydrazino)benzoate

This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.

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