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Calculated Ionization Energy for H2S (Hydrogen sulfide)

20 09 09 14 00
Experimental Ionization Energy is 10.457 ± 0.012 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
composite G2 10.423
G3 10.436
G3B3 10.427
G3MP2 10.420
G4 10.435
CBS-Q 10.449

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 cc-pV(D+d)Z cc-pV(T+d)Z cc-pV(Q+d)Z aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ daug-cc-pVTZ
hartree fock HF 6.735 9.596 9.331 9.504 9.254 9.251 9.247 9.221 9.219 9.207 9.198 9.197 9.194 9.190 9.192 9.230 9.201 9.196 9.181 9.183 9.188 9.194 9.190 9.182 9.199
density functional LSDA 8.321 11.126 11.038 11.073 11.001 11.009 11.041 11.023 11.048 11.016   11.031 10.955 11.066   11.059 11.082   10.955 11.066 11.074 11.081 10.972 11.060  
BLYP 7.662 10.306 10.186 10.273 10.167 10.171 10.228 10.226 10.242 10.163 10.246 10.206 10.111 10.223   10.246 10.252   10.109 10.222 10.237 10.249 10.125 10.216  
B1B95 7.931   10.361 10.426 10.310 10.145 10.332 10.315 10.330 10.311 10.347 10.306 10.269 10.330   10.342 10.347   10.266 10.327 10.336 10.343 10.273 10.322  
B3LYP 7.891 10.541 10.398 10.491 10.362 10.365 10.401 10.391 10.404 10.355 10.409 10.377 10.309 10.394 10.404 10.412 10.415 10.412 10.305 10.391 10.402 10.411 10.319 10.387  
B3LYPultrafine   10.541     10.361 10.364 10.401 10.390     10.409 10.376 10.308 10.394   10.412 10.414   10.304 10.391 10.402 10.411 10.318 10.386  
B3PW91 7.939 10.585 10.436 10.503 10.373 10.377 10.391 10.369 10.383 10.364 10.393 10.363 10.333 10.381   10.397 10.395   10.329 10.378 10.385 10.391 10.343 10.373  
mPW1PW91 7.902 10.553 10.397 10.474 10.335 10.339 10.355 10.339 10.351 10.324 10.359 10.325 10.295 10.341   10.359 10.357   10.290 10.338 10.348 10.354 10.302 10.333  
M06-2X 7.954 10.594 10.422 10.551 10.402 10.397 10.415 10.392 10.398 10.398 10.423 10.384 10.340 10.418   10.417 10.433   10.334 10.414 10.422 10.423 10.342 10.412  
PBEPBE 7.765 10.450 10.329 10.399 10.294 10.299 10.336 10.325 10.342 10.290 10.350 10.305 10.245 10.325   10.344 10.350   10.243 10.323 10.335 10.348 10.257 10.317  
PBEPBEultrafine   10.451     10.294 10.298 10.335 10.324     10.350 10.304 10.244 10.324   10.344 10.350   10.242 10.322 10.334 10.347 10.256 10.317  
PBE1PBE 7.829   10.370 10.451 10.315 10.315 10.333 10.315 10.327 10.304 10.335 10.300 10.268 10.318   10.335 10.335   10.264 10.314 10.322 10.331 10.275 10.310  
HSEh1PBE 7.825 10.516 10.363 10.443 10.306 10.309 10.326 10.308 10.321 10.295 10.328 10.294 10.260 10.312   10.328 10.328   10.256 10.309 10.317 10.323 10.267 10.304  
TPSSh 7.890 10.516 10.349 10.450 10.303 10.304 10.320 10.316 10.321 10.282 10.326 10.290 10.252 10.302 10.305 10.313 10.318 10.313 10.247 10.299 10.304 10.315 10.258 10.293  
wB97X-D 7.960 10.625 10.474 10.520 10.389 10.394 10.405 10.376 10.393 10.388 10.411 10.379 10.911 10.395 10.410 10.429 10.408 10.416 10.367 10.394 10.408   10.377 10.386  
B97D3 7.859 10.430 10.284 10.359 10.231 10.238 10.274 10.265 10.284 10.226 10.290 10.255 10.206 10.266 10.277 10.298 10.287 10.285 10.202 10.263 10.275   10.218 10.256 10.284
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(D+d)Z cc-pV(T+d)Z cc-pV(Q+d)Z aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ daug-cc-pVTZ
Moller Plesset perturbation MP2                           10.306         9.977 10.304 10.416 10.374 9.983 10.306  
MP2=FULL                                     9.995 10.320 10.432 10.392 9.996 10.330  
MP3         9.846   9.907         9.953 9.962 10.296         9.957 10.295 10.403 10.364 9.961 10.296  
MP3=FULL   9.912 9.883 9.859 9.844 9.905 9.912 9.821 9.927 10.234   9.947 9.962 10.293   10.175 10.362   9.957 10.291 10.398 10.361 9.963 10.299  
MP4   9.913     9.842       9.931     9.947 9.947 10.314   10.176 10.390   9.943 10.313 10.433 10.391 9.948 10.315  
MP4=FULL   9.912     9.841       9.931       9.948 10.315   10.178 10.393   9.949 10.318 10.438 10.396 9.955 10.328  
B2PLYP                                 10.337   10.137 10.297 10.339 10.335 10.146 10.295  
B2PLYP=FULL                                     10.142 10.301 10.344 10.339 10.150 10.301  
B2PLYP=FULLultrafine         10.140                                 10.339      
Configuration interaction CID   9.879 9.808 9.822 9.761     9.735                     9.837 10.115 10.206 10.171 9.846 10.116  
CISD     9.802 9.813 9.753     9.731                       10.104 10.194 10.159 9.838 10.104  
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(D+d)Z cc-pV(T+d)Z cc-pV(Q+d)Z aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ daug-cc-pVTZ
Quadratic configuration interaction QCISD   9.892 57.148 9.838 9.809 9.863 9.870 9.787 9.884 10.165   9.904 9.910 10.224   10.110 10.286   9.903 10.221 10.323 10.284 9.910 10.223  
QCISD(T)         9.821     9.806       9.924 9.924 10.282   10.150 10.357   9.919 10.281 10.398 10.356 9.925 10.282  
QCISD(T)=FULL         9.820   9.888           9.926 10.283 10.399 10.151 10.359 10.424 9.925 10.283 10.401   9.931 10.293  
QCISD(TQ)         9.819   9.888           9.924 10.280 10.394 10.151 10.355                
QCISD(TQ)=FULL         9.819   9.887           9.926 10.280 10.395 10.152 10.356                
Coupled Cluster CCD   9.903 9.859 9.848 9.817 9.873 9.879 9.792 9.891 10.179   9.913 9.920 10.237   10.118 10.299   9.912 10.235   10.298 9.919 10.236  
CCSD         9.807         10.165   9.903 9.909 10.223     10.286 10.343 9.902 10.221 10.323 10.284 9.910 10.222  
CCSD=FULL         9.806         10.169   9.898 9.911 10.223 10.322 10.109 10.287 10.344 9.907 10.222 10.323 10.286 9.915 10.231  
CCSD(T)         9.821 9.879 9.889 9.805 9.907     9.924 9.924 10.282 10.397 10.150 10.357 10.422 9.919 10.281 10.398 10.356 9.925 10.282  
CCSD(T)=FULL         128.323             9.920 9.926 10.283 10.399 10.151 10.359 10.424 9.925 10.283 10.401 10.361 9.931 10.293  
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(D+d)Z cc-pV(T+d)Z cc-pV(Q+d)Z aug-cc-pV(T+d)Z cc-pCVDZ cc-pCVTZ 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 9.490 9.191 9.437 9.169 9.593 9.520     9.180
density functional B3LYP 10.470 10.301 10.417 10.276 10.522 10.494     10.386
PBEPBE                 10.318
wB97X-D 10.470 10.303 10.415 10.280 10.584 10.582      
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.