108
Ph \ ··8
'c-o: / ..
Ph
a) Benzophenone
radical anion
d) Oxidodiphenylmethyl or:
Oxidanidyldi -
phenylmethyl
2.2.7.6
p-Benzoquinone
radical anion
1-0xido-4-oxocyclohexa -2,5dienylor:
1-0xidanidyl .. ,
2 Substituted Systems
idem
4-0xidophenyloxylor:
4-0xidanidylphenyloxidanyl
Compounds with Two (or More) Identically Charged Centers
If one and the same compound contains two (or more) cationic or anionic
centers, some of these structural elements must be expressed as prefixes in
the final name. Cation names ending with •.. ium are traditionally prefixed
as ... io... and systematically as ... iumyl...; anion names ending with
... ate or ... ide transform into the prefix formats ... ato ... and ... idyl. .. ,
respectively. Priorities are assigned as follows; cations:
1. C > N > P > As > Sb > Bi > 0 > S > Se > Te > F > CI > Br > I
2. Cyclic take precedence over acyclic systems
Anions: order of priority according to Table 7.
Ell
Ell
8
[( CH3hSe-( CH2hz-P( C6Hs)3]2 CI (12-Dimethylselenoniododecyl)
triphenylphosphonium dichloride
selaniumyldodecyl)triphenylphosphanium ....
[1-( Cycloprop-2-enyl)pyridinium4-yl] cyclopropenylium dibromide
1-Methyl-6-trimethylammonio1,2,4-triazinium difluoride
system.: ... -6-trimethylazaniumyl- ...