From owner-chemistry@ccl.net Thu Nov 25 09:30:01 2010 From: "Herbert Fruchtl herbert.fruchtl-.-st-andrews.ac.uk" To: CCL Subject: CCL: Question on calculation of charge center of electrons in a molecule Message-Id: <-43226-101125035702-4803-DoaHEffzPwSKE6uS41m7qA-,-server.ccl.net> X-Original-From: Herbert Fruchtl Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed Date: Thu, 25 Nov 2010 08:56:34 +0000 MIME-Version: 1.0 Sent to CCL by: Herbert Fruchtl [herbert.fruchtl*_*st-andrews.ac.uk] I don't have time to look at the maths of it, but I think the centre of charge of the electron density should be identical to the centre of the Mulliken charges, which would be easy to calculate (analogous to the centre of mass). Herbert Gegham Galstyan gegham * chemie.fu-berlin.de wrote: > Sent to CCL by: "Gegham Galstyan" [gegham^_^chemie.fu-berlin.de] > Dear CCLers, > > I need to calculate the charge center of electrons in a small organic molecule. Is there any program that is able to do that? > Many thanks beforehand. > > Best wishes, > Gegham Galstyan > > Free University Berlin > Institut fr Chemie und Biochemie > Fabeckstrae 36a > 14195 Berlin > > mailto: gegham,,chemie.fu-berlin.de> > -- Herbert Fruchtl Senior Scientific Computing Officer School of Chemistry, School of Mathematics and Statistics University of St Andrews -- The University of St Andrews is a charity registered in Scotland: No SC013532