2.2 Nomenclature Types for Substituted Systems
Table 6 (continued)
Characteristic
group
-F
-OOH
-NHOH
-NHNH2
-NCO
-NC
-NCS
-I
-10
-I02
-N02
=N(O)OH
-NO
-CI03
-SCN
-OOR
-OR, -SR etc.
Prefix (Class name)
Epoxy ... (traditional)
Fluoro ...
Hydroperoxy .. .
Hydroxyamino ... (Hydroxylamine)
Hydrazino '" systematic name: Diazanyl ...
Isocyanato .. .
Isocyano ... (Isocyanide, Isonitrile)
Isothiocyanato ...
Iodo ...
Iodosyl... (formerly Iodoso ... )
Iodyl .. .
Nitro .. .
aci-Nitro ... systematic name: Hydroxynitroryl. ..
Nitroso .. .
Perchloryl ...
Thiocyanato ...
... yldioxy ... (Peroxide)
... yloxy ... , .. , ylthio ... (Ether, Thioether etc.)
system.: ... ylsulfanyl etc.
77
thus determines the compound type or class; the remaining groups are
then denoted as prefixes in front of the stem name. The most senior group
is identified with the aid of Table 7, which lists the most important compound classes in descending order of priority. Since this table is (regrettably) still quite fragmentary, the much more comprehensive seniority list
of the Chern. Abstr. Index Guide (see literature on p. 5) may be consulted
if necessary.
The manner in which characteristic groups pertaining to the compound classes listed in Table 7 are to be expressed in the form of prefixes
and suffixes is shown in Table 8.
Whereas for most compound classes the exemplifications in Table 8 are
directly applicable without any difficulty, the two alternative naming
methods for aliphatic carboxylic acids and their derivatives as well as for
nitrHes and aldehydes require more detailed illustration.