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Calculated Ionization Energy for OClO (Chlorine dioxide)

20 09 09 14 00
Experimental Ionization Energy is 10.33 ± 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 PM3  
composite G4 10.428

Ionization Energies in eV
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVTZ
hartree fock HF   12.669 10.898   10.937 10.937 11.087 10.949 10.949 10.479   11.152 10.996 10.665 10.610 11.184 10.754 10.636 10.748
density functional LSDA 8.673 11.291 10.603 11.986 10.934 10.934 11.224 11.061 11.061 10.677     10.930 10.956   11.280      
BLYP 8.246 10.643 10.038 11.326 10.362 10.362 10.719 10.518 10.518 10.110     10.357 10.409          
B1B95 9.267   10.496 12.109 10.698 10.698 10.928 10.765 10.765 10.386     10.716 10.602   10.987 10.711    
B3LYP 9.166 11.415 10.570 12.096 10.836 10.836 11.127 10.943 10.943 10.529   11.157 10.845 10.795 10.793 11.180 10.923 10.840  
B3LYPultrafine         10.835                       10.923    
B3PW91 9.210 11.493 10.618 12.128 10.828 10.828 11.054 10.909 10.909 10.528     10.849 10.750          
mPW1PW91 9.365 11.604 10.669 12.239 10.865 10.865 11.092 10.939 10.939 10.557     10.887 10.772          
M06-2X     10.855   10.954           10.819                
PBEPBE 8.311 10.780 10.132 11.427 10.404 10.404 10.703 10.525 10.525 10.167     10.412 10.419          
PBE1PBE         10.802                            
HSEh1PBE   11.521     10.801   11.034             10.722          
TPSSh         10.683   10.918     10.400       10.624          
wB97X-D     10.629   10.845   11.066   10.908     11.057 11.389 10.705     10.800    
B97D3   10.943     10.487   10.753   10.593   10.469 10.762   10.456     10.579   10.574
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVTZ
Moller Plesset perturbation MP2 5.177 9.508 8.760 10.390 9.441 9.441 9.713 9.437 9.437 9.531   9.663 9.383 9.745   9.912 9.955    
MP2=FULL 5.172 9.501 8.753 10.384 9.433 9.433 9.705 9.431 9.431 9.521     9.378 9.739     9.946    
MP3         10.443                            
MP3=FULL         10.428   10.665                        
MP4         9.235                            
B2PLYP         10.218                 10.326          
B2PLYP=FULLultrafine         10.215               10.187 10.322          
Configuration interaction CID   11.182 10.073 12.026 10.471     10.467                      
CISD   11.069 10.038 11.914 10.447     10.444                      
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVTZ
Quadratic configuration interaction QCISD     9.663   10.176 10.176 10.455 10.192 10.192 10.145     10.147 10.370          
QCISD(T)         9.906               9.858 10.145   10.410 10.386    
Coupled Cluster CCD   10.803 9.804 11.681 10.277 10.277 10.526 10.278 10.278 10.134     10.252 10.412   10.718 10.602    
CCSD         10.239                            
CCSD(T)         9.931               9.879 10.167   10.429 10.405    
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ 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   11.255   11.170         10.514
density functional B3LYP 12.371 11.145 12.308 11.097 12.441 12.300     10.711
PBEPBE                 10.362
Moller Plesset perturbation MP2 10.868 9.674 10.716 9.670 11.072 11.100     9.725
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.