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III.F.2.

Completed calculations for C4H6O2 (Crotonic Acid)

Methods and basis sets for which an energy has been calculated. "e" indicates just an energy has been calculated. "o" indicates an optimized geometry. "v" indicates vibrational frequencies. "s" followed by a number indicates completed calculations for different states (for example s1ov). "c" followed by a number indicates completed calculations for different conformations (for example c2ov).
See the Calculated Energies page (section III.A.1) for more calculated properties.
Methods with predefined basis sets
composite G1 e
G2MP2 e
G2 e
G3 e
G3B3 e
G4 e
CBS-Q e

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) TZVP cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ
hartree fock HF ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
density functional LSDA ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
SVWN   ov     ov ov ov ov ov ov   ov ov ov  
BLYP ov ov ov ov ov ov ov ov ov ov ov ov ov    
B1B95 ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
B3LYP ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
B3LYPultrafine         ov                   ov
B3PW91 ov ov ov ov ov ov ov ov ov ov ov ov ov    
mPW1PW91 ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
M06-2X ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
PBEPBE ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
PBE1PBE ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
HSEh1PBE ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
TPSSh         ov   ov                
Moller Plesset perturbation MP2 ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
MP2=FULL ov ov ov ov ov ov ov ov ov ov ov ov ov ov  
MP3         ov   o                
MP3=FULL         ov   ov                
MP4   ov     ov       ov       o    
Configuration interaction CID   ov ov ov ov     ov              
CISD   ov ov ov ov     ov              
Quadratic configuration interaction QCISD   ov ov ov ov ov ov ov ov ov ov ov o ov  
QCISD(T)         ov           ov ov o ov  
Coupled Cluster CCD   ov ov ov ov ov ov ov ov ov ov ov ov ov  
CCSD         ov             ov ov    
CCSD(T)         ov           ov ov o ov  
CCSD(T)=FULL         ov           o ov o o  

Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD
hartree fock HF ov ov ov ov ov ov
density functional B3LYP ov ov ov ov ov ov
Moller Plesset perturbation MP2 ov ov ov ov ov ov
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.