From owner-chemistry@ccl.net Wed Feb  8 06:37:00 2012
From: "Guntram Schmidt guntram.schmidt*|*chemie.uni-halle.de" <owner-chemistry(!)server.ccl.net>
To: CCL
Subject: CCL: How can be separate CH-pi and pi-pi interaction?
Message-Id: <-46262-120208053443-17727-893QHogO/eTrZvmpWAiUOw(!)server.ccl.net>
X-Original-From: Guntram Schmidt <guntram.schmidt###chemie.uni-halle.de>
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Date: Wed, 08 Feb 2012 11:34:27 +0100
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Sent to CCL by: Guntram Schmidt [guntram.schmidt[A]chemie.uni-halle.de]
Dear RAAM,

this surely is not a simple question and there won't be any 
straigtforward answers.

But I can advice you an extremely cool tool for the analysis of your 
interactions:

http://faculty1.ucmerced.edu/ejohnson29/2.cfm?pm=432&lvl=2&menuid=562
based on

Johnson, E. R., Keinan, S., Mori-Sánchez, P., Contreras-García, J., 
Cohen, A. J., & Yang, W. (2010). Revealing noncovalent interactions. 
Journal of the American Chemical Society, 132(18), 6498-506. 
doi:10.1021/ja100936w

regards,
Guntram



Am 07.02.2012 19:22, schrieb Ram Shankar S ramchemistry2011]=[gmail.com:
> Sent to CCL by: "Ram Shankar S" [ramchemistry2011|gmail.com]
> Dear All,
>          How can we separate CH-pi and pi-pi interaction into strong, moderate and weak based on the bond distance and bond angles (geometrical parameters) in pure organic substances? Whether is there any reference available for this?
>
>         On what basis this kind of interactions (CH-pi and pi-pi) is separated, and I would like to know how this CH-pi and pi-pi interactions can be classified as strong, moderate and weak.Please help me in this regards.
>
> Thanks in advance
>
> With Regards,
> RAAM>
>