| Back to the main page of this manual | Input reference of CP2K version 8.2 | 
CP2K_INPUT /
               FORCE_EVAL /
               DFT /
               QS /
               XTB /
               PARAMETER| CN_CONSTANTS {Real} {Real} {Real} | |
| Scaling parameters for Coordination number correction term. | |
| This keyword cannot be repeated and it expects precisely 3 reals. | |
| Default values: 6.00000000E-003 -3.00000000E-003 -5.00000000E-003 | 
| COORDINATION_CUTOFF {Real} | |
| Define cutoff for coordination number calculation | |
| This keyword cannot be repeated and it expects precisely one real. | |
| Default value: 1.00000000E-006 | 
| COULOMB_CONSTANTS {Real} {Real} | |
| Scaling parameters for Coulomb interactions (electrons, nuclei). | |
| This keyword cannot be repeated and it expects precisely 2 reals. | |
| Default values: 2.00000000E+000 1.50000000E+000 | 
| D3BJ_PARAM {Real} {Real} | |
| Becke-Johnson parameters (a1, a2 for the D3 dispersion method. | |
| This keyword cannot be repeated and it expects precisely 2 reals. | |
| Default values: 6.30000000E-001 5.00000000E+000 | 
| D3BJ_SCALING {Real} {Real} | |
| Scaling parameters (s6,s8) for the D3 dispersion method. | |
| This keyword cannot be repeated and it expects precisely 2 reals. | |
| Default values: 1.00000000E+000 2.40000000E+000 | 
| DISPERSION_PARAMETER_FILE {Word} | |
| Specify file that contains the atomic dispersion parameters for the D3 method | |
| This keyword cannot be repeated and it expects precisely one word. | |
| Default value: dftd3.dat | 
| DISPERSION_RADIUS {Real} | |
| Define radius of dispersion interaction | |
| This keyword cannot be repeated and it expects precisely one real. | |
| Default value: 1.50000000E+001 | 
| EN_CONSTANT {Real} | |
| Scaling parameters for electronegativity correction term. | |
| This keyword cannot be repeated and it expects precisely one real. | |
| Default value: -7.00000000E-003 | 
| HALOGEN_BINDING {Real} {Real} | |
| Scaling parameters for electronegativity correction term. | |
| This keyword cannot be repeated and it expects precisely 2 reals. | |
| Default values: 1.30000000E+000 4.40000000E-001 | 
| HUCKEL_CONSTANTS {Real} {Real} {Real} {Real} {Real} | |
| Huckel parameters (s, p, d, sp, 2sH). | |
| This keyword cannot be repeated and it expects precisely 5 reals. | |
| Default values: 1.85000000E+000 2.25000000E+000 2.00000000E+000 2.08000000E+000 2.85000000E+000 | 
| KAB_PARAM {Word} ... | |
| Specifies the specific Kab value for types A and B. | |
| This keyword can be repeated and it expects a list of words. | 
| PARAM_FILE_NAME {Word} | |
| Specify file that contains all xTB default parameters. | |
| This keyword cannot be repeated and it expects precisely one word. | |
| Default value: xTB_parameters | 
| PARAM_FILE_PATH {Word} | |
| Specify the directory with the xTB parameter file. | |
| This keyword cannot be repeated and it expects precisely one word. | 
| XB_RADIUS {Real} | |
| Specifies the radius [Bohr] of the XB pair interaction in xTB. | |
| This keyword cannot be repeated and it expects precisely one real. | |
| Default value: 2.00000000E+001 | 
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