Q-Chem molecule format

Specification

Note

Reference can be found in the Q-Chem manual.

Format used by the Q-Chem program. Elements can be specified either by atomic numbers or element symbols while the geometry is provided in Ångström by default.

Example

Caffeine molecule in xyz format

$molecule
 0  1
 C         1.07320000000000        0.04890000000000       -0.07570000000000
 N         2.51370000000000        0.01260000000000       -0.07580000000000
 C         3.35200000000000        1.09590000000000       -0.07530000000000
 N         4.61900000000000        0.73030000000000       -0.07550000000000
 C         4.57910000000000       -0.63140000000000       -0.07530000000000
 C         3.30130000000000       -1.10260000000000       -0.07520000000000
 C         2.98070000000000       -2.48690000000000       -0.07380000000000
 O         1.82530000000000       -2.90040000000000       -0.07580000000000
 N         4.11440000000000       -3.30430000000000       -0.06940000000000
 C         5.45170000000000       -2.85620000000000       -0.07240000000000
 O         6.38930000000000       -3.65970000000000       -0.07230000000000
 N         5.66240000000000       -1.47680000000000       -0.07490000000000
 C         7.00950000000000       -0.93650000000000       -0.07520000000000
 C         3.92060000000000       -4.74090000000000       -0.06160000000000
 H         0.73400000000000        1.08790000000000       -0.07500000000000
 H         0.71240000000000       -0.45700000000000        0.82340000000000
 H         0.71240000000000       -0.45580000000000       -0.97550000000000
 H         2.99300000000000        2.11760000000000       -0.07480000000000
 H         7.76530000000000       -1.72630000000000       -0.07590000000000
 H         7.14860000000000       -0.32180000000000        0.81970000000000
 H         7.14800000000000       -0.32080000000000       -0.96950000000000
 H         2.86500000000000       -5.02320000000000       -0.05830000000000
 H         4.40230000000000       -5.15920000000000        0.82840000000000
 H         4.40020000000000       -5.16930000000000       -0.94780000000000
$end

Missing Features

Following features are missing

  • reading of z-matrix input
  • possibility to change coordinate units to Bohr

Note

Feel free to contribute support for missing features or bring missing features to our attention by opening an issue.