2.2 Nomenclature Types for Substituted Systems
109
s8
80
2.2.7.7
C008
C008
phenylsulfanyl-5-sulfonatobenzoate
sulfidonaphthalene-2,3dicarboxylate
system.: ... 6-0xidanidyl-5sulfanidyl. ..
Compounds with Positively and Negatively Charged Centers (Zwitterions)
If the centers of unlike charge are located in one and the same parent
hydride skeleton the appropriate suffixes of Table 11 are simply used in an
additive manner.
SiMe3
1
N
0Q:8
H
H
1-Trimethylsilylpyrrol-5-ylium-2-ide
Ph
10
o/~"o
I
I
H2C," / CH2
!'!8
I-Phenyl-l,3,2,5-Dioxathiazinan-2-ium-5-ide
Generally, though, three different naming methods exist for such compounds, depending on how the formal generation of the zwitterion is
envisaged: a) a cation is quasi-substituted in an anion, b) an anion is
attached to a cation (characterized by ... ium or ... ylium), c) a paraphrastic symbolization such as "inner salt" is applied, as preferred by Chern.
Abstr.
MeO Me
NO
\
I
I
2
0c-c-c:8
I
I
\
MeO Me
N02
a) 2-(Dimethoxymethyliumyl)-2-methyl-l,ldinitropropan -1-ide; 3,3-Dimethoxy2,2-dimethyl-l, I-dinitropropan-3-ylium -1-ide