From owner-chemistry@ccl.net Fri Jun 8 01:10:00 2012 From: "psavita savita.pundlik::crl-global.com" To: CCL Subject: CCL: Cnh & Dnh molecules: planar or non-planar Message-Id: <-47062-120607061634-12545-wVy+niNOuqFBnw2vsON/jQ###server.ccl.net> X-Original-From: psavita Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 Date: Thu, 7 Jun 2012 15:46:23 +0530 MIME-Version: 1.0 Sent to CCL by: psavita [savita.pundlik,,crl-global.com] Hello,

Horizontal plane of symmetry does not necessarily mean= the molecule is planar.
This plane ensures symmetric placement of atoms= w.r.t. reflection.
Any textbook on molecular symmetry would explain the= difference
between C2h and D2h, A D2 group has a C2 axis and two 2-fol= d axes
perpendicular to C2... etc.


Thanks and good luck,
<= br>
Savita Pundl= ik
Computational Materials Research & Innovation Group
Computational Resear= ch Laboratories Ltd.,
Taco House, Damle P= ath, Off Law College Road
Pune - 411004, India.




-----owner-chemistry+savita.pundlik=3D= =3Dcrl-global.com=-=ccl.net wrote: -----
To: "Pundlik, Savita Sunil " <savita.pundlik=-== crl-global.com>
From: "Olasunkanmi Lukman Olawale walecomuk : yah= oo.co.uk"
Sent by: owner-chemistry+savita.pundlik=3D=3Dcrl-global.com=-=ccl.netDate: 06/07/2012 03:27PM
Subject: CCL: Cnh & Dnh molecules: planar= or non-planar

Does presence of a horizontal plane of symmetry in a = molecule suggests that it is PLANAR: e.g. Cnh and Dnh molecules? I had a mo= lecule in which some atoms are not in the same plane and yet it has a C2h p= oint group. Should I say it is a planar molecule even though some atoms are= not in the same plane?
Thank you in anticipation of your contributions.=
O= lasunkanmi Lukman Olawale
Current Address:
Department of Chemist= ry,
Obafemi Awolowo University,=
Ile-Ife, Osun State.
Nigeria= .
+234-0-80-52401564 Or +234-0-80-67161091
=