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Calculated Ionization Energy for AlF (Aluminum monofluoride)

20 09 09 14 00
Experimental Ionization Energy is 9.73 ± 0.01 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 PM3  
composite G4 9.856

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) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ daug-cc-pVTZ
hartree fock HF     8.526           8.635       8.559
density functional BLYP     9.467                    
B3LYP                 9.802        
B3LYPultrafine                       9.760  
M06-2X   9.465 9.560         9.648          
PBE1PBE     9.507                    
HSEh1PBE 9.468   9.507 9.664             9.583    
TPSSh     9.443 9.601     9.424       9.521    
wB97X-D   9.355 9.544 9.697   9.645     9.667 9.853 9.617 9.621  
B97D3 9.532   9.634 9.815   9.733   9.752 9.783   9.737 9.754 9.748
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ daug-cc-pVTZ
Moller Plesset perturbation MP2     9.120   9.204       9.280        
MP3=FULL     9.367 9.552                  
MP4                     9.569    
B2PLYP     9.442               9.573    
B2PLYP=FULLultrafine     9.450             9.609 9.584    
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ daug-cc-pVTZ

Ionization Energies in eV
Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD cc-pVTZ-PP aug-cc-pVTZ-PP Def2TZVPP
hartree fock HF                 8.530
density functional B3LYP                 9.728
PBEPBE                 9.585
Moller Plesset perturbation MP2                 9.306
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.