2.16

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Wendy_Liu_3A
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Joined: Wed Sep 21, 2016 2:55 pm

2.16

Postby Wendy_Liu_3A » Sun Mar 12, 2017 10:51 am

Hello! If 2 halides occupy the same carbon, do we have to write the #s separately for each halide, or can we write the both the #s in front?
(i.e. 3,3-chlorofluoropropene or 3-chloro-3-fluoropropene)? Thank you!

Chem_Mod
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Re: 2.16

Postby Chem_Mod » Sun Mar 12, 2017 11:26 am

You would write them separately, the only times you would combine the numbering is with the same type of substituent, or if the numbering is assumed to be 1 for both, like chlorofluoromethane.

So it would be 1 chloro 2 fluoroethane

Anmol Dhaliwal 2C
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Joined: Wed Sep 21, 2016 2:57 pm

Re: 2.16

Postby Anmol Dhaliwal 2C » Sun Mar 12, 2017 11:29 am

I believe the #s would be written separately because they are different halides and this way they would not be confused with each other in the naming (even if they are on the same carbon).

Wendy_Liu_3A
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Joined: Wed Sep 21, 2016 2:55 pm

Re: 2.16

Postby Wendy_Liu_3A » Sun Mar 12, 2017 3:07 pm

Thank you!

Trisha Agarwal 1O
Posts: 11
Joined: Wed Sep 21, 2016 2:56 pm

Re: 2.16

Postby Trisha Agarwal 1O » Mon Mar 13, 2017 9:29 pm

I have a quick follow up question. For this problem the double bond gets priority over the functional group for the numbering(3-chloro-3-bromo-propene). I thought that functional groups had higher priority than double or triple bonds? Is it only for the haloalkanes that double and triple bonds get higher priority? Thanks in advance!


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