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Comparison of experiment and theory for dHNCO

18 10 24 13 42
Species with coordinate dHNCO
Species Name
NH2CONH2 Urea
NH2CONH2+ Urea cation
The small subscript is the number of angles with completed calculations.
Click on an entry for a histogram of the difference distribution.
rms differences (calculated - experiment) in degrees
Methods with predefined basis sets

rms differences (calculated - experiment) in degrees
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 aug-cc-pVDZ aug-cc-pVTZ daug-cc-pVTZ
hartree fock HF 83.52 82.82 82.82 82.42 82.92 82.82   82.92 82.92 82.92 82.82 82.82 82.92 82.82 82.82 82.82 82.82
density functional LSDA   82.92     82.92 82.92 82.72 82.92 82.92 83.02     83.02 82.82 82.72 82.72  
BLYP 83.92 83.12 83.12 82.62 83.02 83.02 82.82 83.02 83.02 83.12   82.92 83.12 82.92 82.82    
B1B95 83.82 82.92 82.92 82.52 83.02 82.92 82.82 83.02 83.02 83.02   82.92 83.02 82.92 82.82 82.92  
B3LYP 83.82 82.92 82.92 82.62 83.02 82.92 82.82 83.02 83.02 83.02 82.82 82.82 83.02 82.92 82.82    
B3LYPultrafine         83.02             82.92 83.02 82.92 82.82 82.92  
B3PW91 83.82 82.92 82.92   83.02 82.92 82.82 83.02 82.92 83.02   82.92 83.02 82.92 82.82 82.92  
mPW1PW91 83.82 82.92 82.92   83.02 82.92   83.02 83.02 82.92   82.82 83.02   82.82 82.82  
M06-2X 83.82 82.92 82.92 82.62 83.02 83.02 82.82 83.02 83.02 83.12   82.92 83.12 83.02 82.92 82.92  
PBEPBE 83.92 83.02 83.02 82.62 83.02 83.02 82.82 83.02 83.02 83.02 82.82 82.92 83.02 82.92 82.82 82.82  
PBEPBEultrafine         83.02             82.92 83.02 82.92 82.82 82.82  
PBE1PBE 83.82 82.92 82.92   83.02 83.02 82.82 83.02 83.02 83.02   82.92 83.02 82.92 82.82 82.82  
HSEh1PBE 83.82       83.02 82.92 82.82 83.02 83.02 83.02   82.92 83.02 82.92 82.82 82.82  
TPSSh   83.02 83.02 82.62 83.02 83.02 82.92 83.02   83.12   82.92 83.02 83.02 82.82 82.82  
wB97X-D     83.32   83.02   82.92   83.02     82.92 82.92 83.02   82.92  
B97D3   83.42     83.12   82.92   83.02   82.92 82.92   83.02   82.92  
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 aug-cc-pVDZ aug-cc-pVTZ daug-cc-pVTZ
Moller Plesset perturbation MP2 83.82 83.32 83.32 82.82 83.22 83.12 83.02 83.12 83.22 83.22   83.12 83.32 83.12 83.02 83.12  
MP2=FULL 83.82 83.32 83.32 82.82 83.22 83.12 83.02 83.22 83.22 83.22   83.12 83.22 83.12 83.02 83.12  
MP3         83.02             83.02 83.22 83.02      
MP3=FULL         83.02   82.92         83.02 83.22 83.02      
MP4   83.32     83.22       83.32     83.12 83.32 83.12 83.02 83.02  
MP4=FULL   83.32     83.22       83.32       83.32 83.12 83.02 83.02  
B2PLYP         83.12         83.12       83.02   83.02  
Configuration interaction CID   83.02 83.02 82.62 83.02     83.02                  
CISD 83.62 83.02 83.02 82.62 83.02     83.02                  
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 aug-cc-pVDZ aug-cc-pVTZ daug-cc-pVTZ
Quadratic configuration interaction QCISD   83.22 83.22 82.72 83.12 83.12 83.02 83.12 83.22 83.12   83.12 83.22 83.02 83.02 83.02  
QCISD(T)         83.12             83.12 83.32 83.12 83.02 83.02  
Coupled Cluster CCD   83.22 83.22 82.72 83.12 83.12 82.92 83.12 83.22 83.12   83.12 83.22 83.02 83.02 82.92  
CCSD         83.12         83.12   83.12 83.22 83.02 83.02 83.02  
CCSD=FULL         83.12         83.12   83.12 83.22 83.02 83.02 83.02  
CCSD(T)         83.12                 83.12 83.02    
CCSD(T)=FULL                           83.02 83.02 83.02  
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 aug-cc-pVDZ aug-cc-pVTZ daug-cc-pVTZ

rms differences (calculated - experiment) in degrees
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 82.42 82.92 82.32 82.92 82.42 82.42     82.82
density functional B1B95 82.52 83.02              
B3LYP 82.52 83.02 82.52 83.02 82.52 82.52     82.92
PBEPBE                 83.02
Moller Plesset perturbation MP2 82.72 83.12 82.82 83.12 82.72 82.72     83.12
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.