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Calculated Ionization Energy for HNO (Nitrosyl hydride)

20 09 09 14 00
Experimental Ionization Energy is 10.1 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 G2 10.220
G3 10.198
G3B3 10.227
G4 10.202
CBS-Q 10.170

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-pVDZ daug-cc-pVTZ
hartree fock HF 7.952 9.493 9.493 9.638 9.285 9.253 9.337 9.232 9.207 9.122 9.198 9.230 9.142 9.145 9.155 9.260 9.185 9.170 9.249 9.179
ROHF   9.693 9.693 9.860 9.529 9.497 9.610 9.465 9.442   9.450 9.460 9.377 9.396 9.408 9.512 9.437 9.424 9.502 9.431
density functional LSDA 8.801 10.397 10.397 10.647 10.507 10.486 10.684 10.530 10.511 10.397     10.350 10.518   10.634        
BLYP 8.357 9.822 9.822 10.070 9.890 9.868 10.108 9.908 9.889 9.767 10.022 10.004 9.728 9.910   10.056 10.017   10.055 10.013
B1B95 8.617 10.036 10.036 10.200 9.983 9.887 10.107 9.958 9.937 9.854 10.005 9.993 9.833 9.926   10.047 9.994     9.989
B3LYP 8.681 10.119 10.119 10.342 10.132 10.107 10.301 10.129 10.109 9.998 10.199 10.193 9.972 10.108 10.148 10.240 10.191 10.183 10.237 10.186
B3LYPultrafine   10.119     10.132 10.107 10.300 10.129   9.998 10.199 10.192 9.972 10.108   10.240 10.191   10.237 10.186
B3PW91 8.694 10.172 10.172 10.321 10.103 10.076 10.222 10.088 10.065 9.969 10.118 10.111 9.958 10.041   10.164 10.105   10.157 10.100
mPW1PW91 8.685 10.161 10.161 10.300 10.069 10.040 10.188 10.048 10.024 9.933 10.081 10.078 9.925 10.001   10.132 10.069   10.126 10.065
M06-2X 8.747 10.285 10.285 10.405 10.170 10.140 10.279 10.185 10.162 10.041 10.216 10.194 10.012 10.165   10.213 10.221   10.208 10.215
PBEPBE 8.391 9.923 9.923 10.103 9.915 9.889 10.091 9.917 9.896 9.799 10.008 9.992 9.769 9.911   10.046 10.007   10.043 10.003
PBEPBEultrafine   9.922     9.914 9.889 10.091 9.917   9.799 10.008 9.992 9.769 9.911   10.046 10.007   10.043 10.003
PBE1PBE 8.587 10.096 10.096 10.244 10.012 10.012 10.133 9.990 9.967 9.880 10.031 10.030 9.867 9.955   10.079 10.026   10.073 10.021
HSEh1PBE 8.586 10.090 10.090 10.242 10.012 9.984 10.135 9.992 9.969 9.878 10.033 10.035 9.863 9.958   10.077 10.028   10.072 10.023
TPSSh 8.556 10.105 10.105 10.219 9.988 9.960 10.110 9.979 9.952 9.851 10.013 10.016 9.840 9.937 9.970 10.052 10.009 10.006 10.046 10.005
wB97X-D 8.715 10.179 10.179 10.335 10.127 10.102 10.241 10.095 10.073 9.984 10.112 10.091 9.977 10.017 10.045 10.170 10.072 10.074 10.161 10.066
B97D3 8.593 10.057 10.057 10.185 9.987 9.962 10.138 9.981 9.960 9.864 10.048 10.039 9.848 9.955 9.996 10.092 10.041 10.038 10.086 10.037
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-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2 8.601       10.096 10.130       10.084 10.281 9.820 9.907   10.313 10.289 10.346 10.373 10.289 10.342
MP2=FULL 8.601       10.089 10.125       10.067 10.264   9.904 10.175 10.297 10.283 10.296 10.357 10.282 10.290
ROMP2         9.609 9.637 9.805 9.514 9.564 9.655 9.856 9.643 9.458 9.773   9.825     9.820 9.903
MP3         10.074   10.105                          
MP3=FULL         10.067   10.242                          
MP4         10.059                 10.221            
B2PLYP 8.322 9.820 9.820 10.041 9.899 9.889 10.075 9.869   9.831 10.036 9.957 9.747 9.943   10.048 10.044   10.045 10.040
B2PLYP=FULL 8.322 9.820 9.820 10.041 9.897 9.889 10.074 9.869 9.872 9.829 10.035 9.958 9.747 9.938   10.048 10.038   10.044 10.034
B2PLYP=FULLultrafine 8.322 9.820 9.820 10.041 9.898 9.889 10.074 9.869 9.872 9.829 10.035 9.958 9.747 9.938   10.048 10.038   10.044 10.034
Configuration interaction CID   9.664 9.664 9.880 9.935     9.833     10.046   9.778 9.988         10.053 10.077
CISD   9.622 9.622 9.836 9.819     9.742     9.980   9.680 9.918         9.957 10.009
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-pVDZ daug-cc-pVTZ
Quadratic configuration interaction QCISD   9.577 9.577 9.801 9.789 9.815 9.968 9.732 9.776 9.868 10.050 9.844 9.667 9.972   9.995 10.087   9.989 10.084
QCISD(T)         9.808     9.744     10.091 9.871 9.683 10.004   10.040 10.135   10.035 10.132
QCISD(T)=FULL         9.804   9.996       10.083   9.681 9.984 10.109 10.037 10.108 10.162 10.031 10.103
Coupled Cluster CCD   9.712 9.712 9.935 10.088 10.115 10.260 9.986 10.027 10.101 10.259 10.090 9.929 10.193   10.253 10.302   10.249 10.300
CCSD         9.814 9.842 9.992 9.754 9.797 9.887 10.066 9.864 9.690 9.990 10.089 10.014 10.103 10.134 10.008 10.100
CCSD=FULL         9.811         9.879   9.864 9.688 9.971 10.085 10.011 10.077   10.004 10.072
CCSD(T)         9.824 9.852 10.017 9.762 9.810 9.913 10.108 9.888 9.698 10.023 10.133 10.055 10.153 10.186 10.050 10.151
CCSD(T)=FULL         59.980           10.100 9.888 9.696 10.002 10.128 10.052 10.125 10.179 10.046 10.120
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-pVDZ 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 9.926 9.384 9.859 9.308 9.636 9.635     9.161
ROHF                 9.411
density functional BLYP                 9.968
B1B95                 9.959
B3LYP 10.589 10.294 10.539 10.248 10.447 10.436     10.152
B3LYPultrafine                 10.152
B3PW91                 10.071
mPW1PW91                 10.035
M06-2X                 10.149
PBEPBE                 9.959
PBEPBEultrafine                 9.959
PBE1PBE                 9.989
HSEh1PBE                 9.993
TPSSh                 9.970
wB97X-D 10.492 10.222 10.453 10.171 10.362 10.353     10.054
B97D3                 10.001
Moller Plesset perturbation MP2     9.953 9.885 9.848       10.243
MP2=FULL                 10.235
ROMP2                 9.809
B2PLYP                 9.986
B2PLYP=FULL                 9.985
B2PLYP=FULLultrafine                 9.985
Configuration interaction CID                 10.011
CISD                 9.943
Quadratic configuration interaction QCISD                 10.004
QCISD(T)                 10.042
QCISD(T)=FULL                 10.038
Coupled Cluster CCD                 10.221
CCSD                 10.022
CCSD=FULL                 10.019
CCSD(T)                 10.059
CCSD(T)=FULL                 10.056
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.