Hi all,<br>I am trying to find the energy of a particular geometry for the methoxy molecule, and I find that I get different energies when I use symmetry (Cs) and without.<br>I looked at a few posts that talk about a given energy calculation that gives different answers when using and without symmetry. <br>
<a href="http://www.molpro.net/pipermail/molpro-user/2008-November/002743.html">http://www.molpro.net/pipermail/molpro-user/2008-November/002743.html</a><br><a href="http://www.molpro.net/pipermail/molpro-user/2009-October/003361.html">http://www.molpro.net/pipermail/molpro-user/2009-October/003361.html</a><br>
<a href="http://www.molpro.net/pipermail/molpro-user/2009-April/002983.html">http://www.molpro.net/pipermail/molpro-user/2009-April/002983.html</a><br clear="all"><br>They suggest using the shift option in HF input and I have tried it too. Nevertheless, I am sure that I am not calculating the same state in the two cases. Any suggestions as to how to arrive at the same ground state (this is an E state) in the two cases? I have attached my input files for the two cases. <br>
<br>-- <br>Jayashree<br>