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naming of compounds

Submitted by Anonymous on 10 June 2004 - 2:59pm.

I have left out the single bonds from the relevant carbon to each atom/molecule and used "......" to keep each atom/molecule seperate for this post.
Any idea what these three are called (pardon my diagrams):

C6H5....................H
............C=C...........
C6H5....................H

C6H5..............C6H5
...........C=C............
H.........................H

C6H5.................Cl
..........C=C...........
C6H5..................H

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Submitted by Anonymous on 10 June 2004 - 3:49pm.

well, C=C is ethane.

Cl is a chloro group

C6H5 is a phenyl group (ie, a benzene ring)

you can build up the names by adding the groups to ethane,
labelling which carbon the group is attached to ("1" or "2")
and whether its cis- or trans-

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Submitted by Anonymous on 10 June 2004 - 5:35pm.

ah,so it would be:

(1st example) 2-Phenylethene?
(2nd example) cis,2-Phenylethene?
(3rd example) Chloro-phenylethene?

Thank`s so far!!

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