<div dir="ltr">Dear all,<br><br>coming back to my inquiry on QM/MM: is it possible to use an MM cell which has same Lx and Ly dimensions as the QM cell (the Lz dimension of MM will then be larger than the lz dimension of the QM part)? In this case the prerequisite of being the QM cell centered in the MM part should be fulfilled right?<br><br>Thanks a lot for any help,<br><br>GM<br><br>Il giorno mercoledì 15 marzo 2017 13:14:02 UTC+1, Giacomo Melani ha scritto:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div dir="ltr"><div><div><div><div><div>Dear CP2K Users,<br><br></div>I'm writing you
because I would like to do QM/MM simulations of the Al2O3(0001) surface
in contact with liquid water. To be more precise, what I'd like to do is
to treat the oxide surface and some H2O molecules on a DFT level and
then treating the rest of H2O molecules using a force field. The
question I'm asking is related to the possibility to use
non-orthorhombic unit cells (i.e. hexagonal) for the QM/MM calculations.
In other discussions I've read that such simulations are designed only
for orthorhombic ones but I was wondering if the QM part could be
adjusted in a different symmetry with respect to the total cell.<br><br></div>Thank you very much in advance for any help.<br><br></div>Best regards,<br><br></div>Giacomo Melani<br><br></div>Institut für Chemie, Universität Potsdam</div></blockquote></div>