Re: ORGLIST: Bond length and conformation

Date view Thread view Subject view Author view Attachment view

From: Christopher Joseph Gorman (gorman$##$fas.harvard.edu)
Date: Tue Sep 18 2001 - 09:21:25 EDT


A species in resonance will have a shorter bond length than one not in
resonance

eg.

=c
  \
   NH2

when N rotates into the plane of resonance the bond will be shorter
because of the patrial double bond character.

There are also numerous examples of the anomeric effect.


-Chris

*****************************************************************

"Outside of a dog, a book is man's best friend. Inside of a dog, it's
too dark to read."


-Groucho Marx

*****************************************************************

On Tue, 18 Sep 2001, J.Aires de Sousa wrote:

> Does anyone know an experimental or theoretical example in which
> conformation has a significant influence on bond length, i.e., two
> conformations of the same molecule with different bond lengths ?
>
> Any information on this topic would be helpful.
>
> --
> Dr. Joao Aires de Sousa
>
> e-mail:jas$##$mail.fct.unl.pt
> Departamento de Quimica, Fac. Ciencias e Tecnologia,
> Univ. Nova de Lisboa, 2825 - 114 Caparica, Portugal
> __________________
>
> ORGLIST - Organic Chemistry Mailing List
> Website / Archive / FAQ: http://www.orglist.net/
> List coordinator: Joao Aires de Sousa (jas$##$mail.fct.unl.pt)
>

__________________

ORGLIST - Organic Chemistry Mailing List
Website / Archive / FAQ: http://www.orglist.net/
List coordinator: Joao Aires de Sousa (jas$##$mail.fct.unl.pt)




Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.4 : Fri Sep 19 2003 - 12:16:28 EDT