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Specific Classes of Compounds

R-5.1.4 Silicon parent hydrides

R-5.1.4.1 Silanes. Silicon analogues of hydrocarbons are called "silanes" generically and are named analogously to the corresponding hydrocarbons.

Examples to R-5.1.4.1

R-5.1.4.2 Heterogeneous silicon hydrides: siloxanes and analogues. Silicon compounds having the general formula are called "siloxanes" generically and are named on the basis of parent hydride names such as "disiloxane", "trisiloxane", etc., according to the number of silicon atoms (n+2) in the chain. Sulfur, selenium, tellurium, and saturated nitrogen analogues are named in the same way as "silathianes", "silaselenanes", "silatelluranes" and "silazanes", respectively (see also R-2.2.3.2).

Examples to R-5.1.4.2

Monocyclic siloxanes having the general formula are named "cyclotrisiloxane", "cyclotetrasiloxane", etc., according to the number of silicon atoms (n) present. Sulfur, selenium, tellurium, and saturated nitrogen analogues are named as "cyclosilathianes", "cyclosilaselenanes", etc., respectively (see also R-2.3.3.2).

Example to R-5.1.4.2

Bi- and polycyclic siloxanes, silathianes, silaselenanes, silatelluranes, and silazanes are named by citing a prefix defining the ring structure, such as "bicyclo[3.3.1]" and "spiro[5.7]", followed by a numerical term giving the number of silicon atoms present in the ring system, the whole being attached to "siloxane", "silathiane", "silaselenane", "silatellurane", "silazane", as appropriate. In the case of bi- and polycyclic silazanes, the prefix 1Si- or 1N- is used when necessary to indicate the atom at the bridgehead that is numbered 1 (see also R-2.4.2). Additional details for naming these compounds are given in the 1979 edition of the IUPAC Nomenclature of Organic Chemistry (see Rule D-6).

Examples to R-5.1.4.2

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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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