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Calculated Ionization Energy for SiH4 (Silane)

Experimental Ionization Energy is 11 ± 0.02 eV
Please note! These calculated ionizataion energies have the vibrational zero-point energy (zpe) included, but the zpe has NOT been scaled. Click on an entry for more details, including the ionization energy with a scaled zpe.
Original data displayed. Press to display differences.
Differences displayed. Press to display original data.

Ionization Energies in eV
Methods with predefined basis sets
semi-empirical PM6  
composite G3B3 11.353
G4 11.230

Ionization Energies in eV
Methods with standard basis sets
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
hartree fock HF     10.768         10.629      
density functional SVWN 11.733     11.492       11.430      
BLYP     11.099                
B3LYP             11.191 11.195     11.184
M06-2X   11.400 11.400                
HSEh1PBE 11.452   11.297 11.115              
TPSSh     11.375 11.230     11.158     11.126  
wB97X-D   11.568 11.488 11.314   11.268   11.239 11.595 11.223 11.212
B97D3 11.387         10.999          
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
Moller Plesset perturbation MP2     11.120   11.128     11.013      
MP2=FULL                     11.192
MP3=FULL     11.149 11.074              
B2PLYP     11.280             11.159  
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
For descriptions of the methods (AM1, HF, MP2, ...) and basis sets (3-21G, 3-21G*, 6-31G, ...) see the glossary in section I.C. Predefined means the basis set used is determined by the method.