3.7 Halogen Derivatives
137
PhNKl- Ij ~ S02NH2
H
-
N-Fluoro-2H-indenimine
[Fluoro-{2H-inden-2yliden )azane J
4-{Phenyliminomethyl)benzenesulfonamide [4-{Phenylazanylidenemethyl) ... J
Me
Me syst.:
\
/
N,N' -Methanedi{ylidene )bis{propan-2amine)
HC-N=C=N-CH
/
\
Me
Me
3.7
Halogen Derivatives
CA.: ... methanetetraylbis ...
trad.: N,N' -Diisopropylcarbodiimide
new: Methanedi{ylidene )bis{propan -2ylazane)
Halogen compounds should generally be named substitutively; complete
substitution can be indicated by the prefix per.
H3C - CH2 - CH - CH2- CH3
I
CI
3-Chloropentane
(JC
Br
~I
CI
1-Bromo-2-chlorobenzene
(o- Bromochlorobenzene)
For some simple halogen derivatives, however, radicofunctional names
are still widely in use.
H3C-1
Methyl iodide (iodomethane)
BrH2C-CH2Br
Ethylene dibromide (l,2-dibromoethane)
C6Hs-CHCb
Benzylidene dichloride, traditionally also benzal
chloride
In a few cases additive names still persist although they are strongly discouraged by now.
C6HS-CHBr-CHBr-C6HS Stilbene dibromide (l,2-dibromo-l,2diphenylethane)
Chern. Abstr.: 1,2-Dibromoethane-l ,2diylbisbenzene