94
2 Substituted Systems
2.2.6.2
Identical Components Bound to Oi- or Polyvalent Groups
Such compounds are named by first marking the positions of attachment
of the parent components with the central group, then the name of that
group followed by the multipliers di..., tri ... (or bis ... , tris ... ) etc., and
finally the name of the parent component including its characteristic
group(s). Additional substituents are accounted for by prefixes, with the
following priorities of numbering being observed:
1. characteristic groups (suffixes)
2. positions of attachment
3. prefix substituents
1
I
HOOC'9
~'
~N'(JCNO
YCOO~' COOH
CIO
6-Chlorosyl-2" -nitroso-2,3',4"nitrilotribenzoic acid
/CH2-C02H
0 28"
CH2-C02H
Sulfonyldiacetic acid
If the connecting groups are themselves assemblies of several parts, this
concept is logically extended.
3
1
~N:~H2-CH2-~00H
)=1- CH 2 -CH2-COOH
o
b-N:~H'-CH'-~OOH
-
CH 2 -CH 2 -COOH
3,3' ,3" ,3'" -[Oxybis( 1 ,3-phenylenenitrilo) 1 tetrapropanoic acid
The general applicability of such complex connecting groups as bivalent
or polyvalent substituent groups is documented by some additional examples: