Chemical Forums

Please login or register.

Login with username, password and session length

Sponsored links

Pages: [1]   Go Down

Author Topic: Cyclic diyne  (Read 457 times)

0 Members and 1 Guest are viewing this topic.

Elnaz

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 5
Cyclic diyne
« on: January 24, 2013, 09:36:08 AM »

Hi there,

I need to know what is the smallest cyclic diyne?

thanks
Logged

curiouscat

  • Chemist
  • Sr. Member
  • *
  • Mole Snacks: +102/-29
  • Offline Offline
  • Posts: 2312
Re: Cyclic diyne
« Reply #1 on: January 24, 2013, 06:59:13 PM »

This?

C1#CCCC#CCC1

Or

C1#CC#CCCCC1
Logged

Elnaz

  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 5
Re: Cyclic diyne
« Reply #2 on: January 26, 2013, 07:43:03 AM »

thanks curiosecat, could you write the source please?
Logged

Arkcon

  • Global Moderator
  • Sr. Member
  • ***
  • Mole Snacks: +325/-111
  • Offline Offline
  • Posts: 4590
Re: Cyclic diyne
« Reply #3 on: January 26, 2013, 09:56:16 AM »

I don't believe there's likely to be a source dedicated to just this question.  I would have suggested you try ever smaller diyne and see if they exist.  Its not likely a cyclic diyne exits if the complementary cyclic diene doesn't exist, and there's ring strain even on smaller cyclic alkanes.  Unless you're looking for theoretical predictions based on bond lengths and hybridizations, but that's a pretty advanced topic.  I'm also guessing, since you need a source or citation, you'd not be satisfied with buying a molecular modeling kit and seeing how small of one you can make without the model popping apart.
Logged
That all depends on how reasonable we're all willing to be.  I just want my friends back, except for Cartman, you can keep him.

curiouscat

  • Chemist
  • Sr. Member
  • *
  • Mole Snacks: +102/-29
  • Offline Offline
  • Posts: 2312
Re: Cyclic diyne
« Reply #4 on: January 26, 2013, 10:07:13 AM »

I don't believe there's likely to be a source dedicated to just this question.  I would have suggested you try ever smaller diyne and see if they exist.  Its not likely a cyclic diyne exits if the complementary cyclic diene doesn't exist, and there's ring strain even on smaller cyclic alkanes.  Unless you're looking for theoretical predictions based on bond lengths and hybridizations, but that's a pretty advanced topic.  I'm also guessing, since you need a source or citation, you'd not be satisfied with buying a molecular modeling kit and seeing how small of one you can make without the model popping apart.

One relatively cheap option might be to use something like Gaussian to calculate relative stabilities. Though not sure how you'd use that to say if or not they exist.
Logged

AWK

  • Global Moderator
  • Sr. Member
  • ***
  • Mole Snacks: +355/-108
  • Offline Offline
  • Gender: Male
  • Posts: 4844
Re: Cyclic diyne
« Reply #5 on: January 26, 2013, 11:39:47 AM »

Logged
AWK
Pages: [1]   Go Up
 

Mitch Andre Garcia's Chemical Forums 2003-Present.

Page created in 0.092 seconds with 23 queries.