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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: zeshkani on August 23, 2011, 03:04:52 PM

Title: carbon with 5 bonds
Post by: zeshkani on August 23, 2011, 03:04:52 PM

Hi all,

 I was just trying to find out the reaction or place were carbon can have 5 bonds.

I have seen before were carbon had 5 bonds to it, it was an intermediate to some reaction, long time ago,

I was wondering if anybody had any ideas as to what reaction/ intermediate this coulda have been, or knows other reactions to were carbon can have 5 bonds to it.

i' am just curious to find out


thx

Title: Re: carbon with 5 bonds
Post by: fledarmus on August 23, 2011, 03:32:54 PM

Carbon doesn't have 5 bonds. However, the intermediate to an Sn2 reactions is sometimes drawn as if the newly forming bond and the breaking bond are both in place at the same time, so it looks like a carbon with 5 substituents.

Title: Re: carbon with 5 bonds
Post by: cth on August 23, 2011, 07:18:21 PM

Quote from: zeshkani on August 23, 2011, 03:04:52 PM

Hi all,

 I was just trying to find out the reaction or place were carbon can have 5 bonds.

I have seen before were carbon had 5 bonds to it, it was an intermediate to some reaction, long time ago,

I was wondering if anybody had any ideas as to what reaction/ intermediate this coulda have been, or knows other reactions to were carbon can have 5 bonds to it.

i' am just curious to find out


thx

Maybe you were looking for the cation CH₅⁺   http://en.wikipedia.org/wiki/CH5%2B ?

Remark, in this case the carbon atom is considered to have four bonds with five hydrogen atoms.
I don't know any compound where a carbon would have five bonds. Carbon atoms don't have five bonds.

Title: Re: carbon with 5 bonds
Post by: AWK on September 01, 2011, 05:40:00 AM

http://www.scs.illinois.edu/denmark/presentations/2007/gm-2007-04-17.pdf