qp2/docs/source/users_guide/qp_create_ezfio.rst

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.. _qp_create_ezfio:
qp_create_ezfio
===============
.. program:: qp_create_ezfio
This command creates an |EZFIO| directory from a standard `xyz` file or
from a `z-matrix` file in Gaussian format.
Usage
-----
.. code:: bash
qp_create_ezfio [-a] -b <string> [-c <int>] [-d <float>]
[-h] [-m <int>] [-o EZFIO_DIR] [-p <string>] [-x] [--] FILE
.. option:: -a, --au
If present, input geometry is in atomic units.
.. option:: -b, --basis=<string>
Name of basis set. The basis set is defined as a single string if
all the atoms are taken from the same basis set, otherwise specific
elements can be defined as follows::
-b "cc-pcvdz | H:cc-pvdz | C:6-31g"
-b "cc-pvtz | 1,H:sto-3g | 3,H:6-31g"
By default, the basis set is obtained from the local database of the.
|qp| This option is mandatory .
If ``<string>`` is set to ``show``, the list of all available basis
sets is displayed.
.. option:: -c, --charge=<int>
Total charge of the molecule. Default is 0.
.. option:: -d, --dummy=<float>
Add dummy atoms (X) between atoms when the distance between two atoms
is less than :math:`x \times \sum R_\mathrm{cov}`, the covalent radii
of the atoms. The default is x=0, so no dummy atom is added.
.. option:: -h, --help
Print the help text and exit
.. option:: -m, --multiplicity=<int>
Spin multiplicity :math:`2S+1` of the molecule. Default is 1.
.. option:: -o, --output=EZFIO_DIR
Name of the created |EZFIO| directory.
.. option:: -p <string>, --pseudo=<string>
Name of the pseudo-potential. Follows the same conventions as the basis set.
.. option:: -x, --cart
Compute |AOs| in the Cartesian basis set (6d, 10f, ...)
Using custom atomic basis sets
------------------------------
If a file with the same name as the basis set exists, this file will
be read. For example, if the file containing the basis set is named
``custom.basis``, and the *xyz* geometry is in ``molecule.xyz``, the
following should be used::
qp_create_ezfio -b custom.basis molecule.xyz
Basis set files should be given in |GAMESS| format, where the full
names of the atoms are given, and the basis sets for each element are
separated by a blank line. Here is an example ::
HYDROGEN
S 3
1 13.0100000 0.0196850
2 1.9620000 0.1379770
3 0.4446000 0.4781480
S 1
1 0.1220000 1.0000000
P 1
1 0.7270000 1.0000000
BORON
S 8
1 4570.0000000 0.0006960
2 685.9000000 0.0053530
3 156.5000000 0.0271340
4 44.4700000 0.1013800
5 14.4800000 0.2720550
6 5.1310000 0.4484030
7 1.8980000 0.2901230
8 0.3329000 0.0143220
S 8
1 4570.0000000 -0.0001390
2 685.9000000 -0.0010970
3 156.5000000 -0.0054440
4 44.4700000 -0.0219160
5 14.4800000 -0.0597510
6 5.1310000 -0.1387320
7 1.8980000 -0.1314820
8 0.3329000 0.5395260
S 1
1 0.1043000 1.0000000
P 3
1 6.0010000 0.0354810
2 1.2410000 0.1980720
3 0.3364000 0.5052300
P 1
1 0.0953800 1.0000000
D 1
1 0.3430000 1.0000000
Using custom pseudo-potentials
------------------------------
As for the basis set, if a file with the same name as the
pseudo-potential exists, this file will be read. For example, if the
file containing the custom pseudo-potential is named ``custom.pseudo``,
the basis set is named ``custom.basis``, and the *xyz* geometry is in
``molecule.xyz``, the following command should be used
.. code:: bash
qp_create_ezfio -b custom.basis -p custom.pseudo molecule.xyz
Pseudo-potential files should be given in a format very close to
|GAMESS| format. The first line should be formatted as ``%s GEN %d %d``
where the first string is the chemical symbol, the first integer is
the number of core electrons to be removed and the second integer is
LMAX+1 as in |GAMESS| format. The pseudo-potential for each element are
separated by a blank line. Here is an example ::
Ne GEN 2 1
3
8.00000000 1 10.74945199
85.99561593 3 10.19801460
-56.79004456 2 10.18694048
1
55.11144535 2 12.85042963
F GEN 2 1
3
7.00000000 1 11.39210685
79.74474797 3 10.74911370
-49.45159098 2 10.45120693
1
50.25646328 2 11.30345826