1.2 Cyclic Systems
6
63
7aH-Cyclopenta[ 5,6] [1,3]dioxino [4',5',
6' : 4,5] naphtho [2, I-d] [1,3] dioxocine
3H,6H-Indolo[3,2,I-ij]oxepino
[2,3,4-de ]pyrrolo [2,3-h] quinoline
Actually, in the above example carbazole would be the most senior base
component; since in that case one of the attached components (oxepine)
would have to be fused at the same time with the parent component and
one of the other attached components (pyridine) the second choice
(quinoline) comes into force.
Cationic systems are provided with the endings -ium, -diium, etc. (see
p.99).
2
1-:/"
2CI8
Dipyrido[ 1,2-b: 2',1' -j] [2,9Jphenanthrolinediium dichloride
Dibenzo [2,3: 4,5Jphospholo [1 ,2-JJphosphanthridinium
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