Home » Ask & Discuss » Chemistry. » Organic Chemistry « Back to Discussion

Organic Chemistry

Blazing goIITian

Joined:	12 Apr 2008
Post:	424

18 Aug 2009 23:44:12 IST

0 People liked this

700

which is most stable? 1. butadiene 2. penta-1,4-diene 3. hex-1,4-diene 4. ethene

None

which is most stable? 1.butadiene 2.penta-1,4-diene 3. hex-1,4-diene 4. ethene

Share this article on:

Comments (5)

Gaurav Bangar

New kid on the Block

Joined: 11 Aug 2009

Posts: 16

19 Aug 2009 01:24:39 IST

Like 0 people liked this

the more substituted the alkene is, the more stable it is.

Anurag Seth

Blazing goIITian

Joined: 9 Feb 2007

Posts: 1015

19 Aug 2009 09:21:30 IST

Like 0 people liked this

ethene

kjvenky

Cool goIITian

Joined: 19 May 2009

Posts: 42

19 Aug 2009 11:06:52 IST

Like 2 people liked this

Here the alkene stability is attained due to conjugation. (Two alternate double bonds can result in conjugation like in benzene). because alternate double bonds can lead to more resonanse structures.Only thing that has alternate double here is butadieneSome more Stability rules of Alkene::There are 3 factors that influence alkene stability:1. Degree of substitution: more highly alkylated alkenes are more stable, so tetra > tri > di > mono-substituted.2. Stereochemistry: trans > cis due to reduced steric interactions when R groups are on opposite sides of the double bond.3. Conjugated alkenes are more stable than isolated alkenes.

Sagar Saxena

Forum Expert

Joined: 8 Oct 2008

Posts: 7221

29 Aug 2009 13:18:06 IST

Like 0 people liked this

stability of any compound is always judge by the nmbr of resonating structure it will undergo while reaction.........

more resonating structure more stable is the compound.........

so as hex--1,4 diene............,is more stable , due to more resonating structure.........

zzzzz

Blazing goIITian

Joined: 12 Apr 2008

Posts: 424

29 Aug 2009 13:28:49 IST

Like 0 people liked this

ans. is butadiene.........as in hex 1,4-diene there will not be resonance becoz 2 consecutive single bond

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team