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Calculated Electron Affininty for HS (Mercapto radical)

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Experimental Electron Affinity is 2.314 ± 0.003 eV
Please note! These calculated electron affinity 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

Electron Affinities in eV
Methods with predefined basis sets
composite G2 2.311
G3 2.330
G3B3 2.328
G3MP2 2.357
G4 2.292
CBS-Q 2.383

Electron Affinities 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 cc-pV(T+d)Z daug-cc-pVTZ
hartree fock HF -5.549 0.827 0.615 0.985 0.793 0.788 1.144 1.127 1.130 0.721 1.071 0.862 0.518 0.807 0.942 1.136 1.076 1.069 0.801 1.075
ROHF   0.847 0.720 1.006 0.899 0.893 1.134 1.235 1.238     0.975 0.632 0.958 1.098 1.260 1.231 1.227    
density functional LSDA -3.904 2.414 2.431 2.563 2.493 2.545 3.108 3.009 3.071 2.564   2.724 2.278 2.806   3.113 3.061      
BLYP -4.641 1.478 1.372 1.697 1.611 1.612 2.242 2.172 2.184 1.595   1.848 1.337 1.824   2.266 2.249      
B1B95 -4.331   1.573 1.854 1.762 1.851 2.225 2.180 2.192 1.747   1.912 1.519 1.894   2.240 2.217      
B3LYP -4.406 1.710 1.591 1.908 1.808 1.808 2.339 2.298 2.309 1.787 2.321 2.002 1.542 1.979 2.144 2.360 2.339 2.336    
B3LYPultrafine   1.711     1.808 1.808 2.339 2.299       2.002 1.542 1.979   2.360 2.339      
B3PW91 -4.328 1.815 1.689 1.971 1.869 1.870 2.301 2.272 2.285 1.844   2.020 1.624 1.997   2.323 2.293      
mPW1PW91 -4.363 1.806 1.656 1.941 1.850 1.851 2.277 2.240 2.234 1.804   1.972 1.607 1.965   2.283 2.247      
M06-2X -4.305 1.779 1.668 1.987 1.876 1.876 2.308 2.294 2.303 1.860   2.035 1.615 2.020   2.301 2.308      
PBEPBE -4.499 1.688 1.577 1.874 1.787 1.788 2.329 2.266 2.278 1.766 2.308 1.971 1.528 1.948   2.352 2.328      
PBEPBEultrafine   1.687     1.787 1.788 2.329 2.266       1.971 1.528 1.948   2.352 2.329      
PBE1PBE -4.433   1.630 1.922 1.814 1.814 2.251 2.215 2.227 1.786   1.952 1.564 1.927   2.270 2.238      
HSEh1PBE -4.438 1.748 1.618 1.910 1.802 1.803 2.246 2.215 2.227 1.775   1.950 1.554 1.923   2.270 2.235      
TPSSh   1.751 1.616 1.912 1.803 1.803 2.237 2.206   1.771   1.950 1.558 1.923   2.260 2.228      
wB97X-D     1.719   1.890   2.335   2.309     2.039 2.335 2.016     2.325      
B97D3   1.639     1.712   2.261   2.215   2.238 1.921   1.893     2.262      
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 cc-pV(T+d)Z daug-cc-pVTZ
Moller Plesset perturbation MP2 -5.556 1.131 1.092 1.358 1.326 1.346 1.825 1.759 1.804 1.696   1.539 1.199 1.875 2.167 2.203 2.317 2.387    
MP2=FULL -5.560 1.133 1.095 1.360 1.329 1.349 1.827 1.762 1.807 1.703   1.539 1.202 1.877 2.171 2.207 2.320 2.392 1.875  
ROMP2 -5.550   1.085 1.363 1.319 1.339 1.817 1.753 1.796 1.673   1.527 1.186 1.848   2.185        
MP3         1.280   1.299         1.476 1.142 1.811            
MP3=FULL         1.278   1.757         1.472 1.141 1.805            
MP4   1.136     1.279       1.755     1.479 1.125 1.828   2.145 2.277      
MP4=FULL   1.136     1.279       1.755       1.125 1.826   2.146 2.276      
B2PLYP -4.833 1.471 1.368 1.677 1.589 1.595 2.101 2.052 2.073 1.693   1.778 1.366 1.871   2.242 2.260      
B2PLYP=FULL -4.834 1.471 1.369 1.677 1.590 1.596 2.102 2.053 2.073 1.695   1.779 1.367 1.871   2.243 2.261      
Configuration interaction CID   1.111 0.978 1.339 1.207     1.603           1.638            
CISD     0.978 1.336 1.203     1.604           1.629            
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 cc-pV(T+d)Z daug-cc-pVTZ
Quadratic configuration interaction QCISD   1.130 -46.651 1.365 1.253 1.271 1.740 1.667 1.706 1.582   1.442 1.102 1.744   2.060 2.139      
QCISD(T)         1.265     1.699       1.463 1.109 1.799   2.124 2.240      
QCISD(T)=FULL         1.265   1.777           1.110 1.797 2.099 2.125 2.238 2.305    
QCISD(TQ)         1.263   1.774           1.108 1.795 2.096 2.122 2.232 2.298    
QCISD(TQ)=FULL         1.263   1.773           1.109 1.792 2.093 2.122 2.230      
Coupled Cluster CCD   1.133 1.018 1.368 1.256 1.276 1.730 1.665 1.705 1.593   1.445 1.107 1.755   2.062 2.150      
CCSD         1.251         1.582   1.440 1.101 1.744 2.017 2.057 2.139 2.199    
CCSD=FULL         1.251         1.581   1.436 1.101 1.741 2.014 2.057 2.135 2.196    
CCSD(T)         1.264 1.284 1.775 1.698     2.161 1.462 1.109 1.799 2.102 2.122 2.239 2.307 1.794  
CCSD(T)=FULL         1.265             1.459 1.109 1.797 2.100 2.123 2.238 2.306    
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 cc-pV(T+d)Z daug-cc-pVTZ

Electron Affinities 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 1.048 0.834 1.120 0.924 0.773 0.664     0.812
density functional B3LYP 2.030 1.916 2.076 1.975 1.695 1.584     1.977
PBEPBE                 1.945
Moller Plesset perturbation MP2 1.390 1.444 1.525 1.578 1.009 0.954     1.885
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.