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III.F.2.

Completed calculations for C3H4O (Methylketene)

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 G3B3 e
G3MP2 e
G4 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) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ cc-pV(T+d)Z
hartree fock HF   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                    
B1B95 ov ov ov ov   ov ov ov ov ov     ov ov ov   ov
B3LYP   ov     ov   ov         ov       ov  
B3LYPultrafine                           ov   ov  
M06-2X         ov                        
PBEPBEultrafine         ov                        
PBE1PBE         ov                        
HSEh1PBE         ov                        
TPSSh         ov   ov                    
Moller Plesset perturbation MP2   ov     ov   ov         ov   ov      
MP2=FULL         ov                 ov      
MP3             o                    
MP3=FULL         ov   ov                    
B2PLYP         ov                 ov      
B2PLYP=FULLultrafine         ov                        

Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD
density functional B1B95 ov ov        

Single point energy calculations (select basis sets)
6-311+G(3df,2p) cc-pVDZ cc-pVTZ aug-cc-pVDZ aug-cc-pVTZ cc-pV(T+d)Z
Moller Plesset perturbation MP2FC// HF/6-31G* e   e     e
MP2FC// B3LYP/6-31G* e e e     e
MP2FC// MP2FC/6-31G*     e e e e
MP4// HF/6-31G* e   e     e
MP4// B3LYP/6-31G*   e e     e
MP4// MP2/6-31G*     e     e
Coupled Cluster CCSD// B3LYP/6-31G* e          
CCSD(T)// B3LYP/6-31G* e          
CCSD// MP2FC/6-31G*       e e  
CCSD(T)// MP2FC/6-31G*       e e  

Barriers to internal rotation or inversion


Methods with predefined basis sets
semi-empirical PM3 s1c1t1

Methods with standard basis sets
3-21G 6-31G* 6-31+G** cc-pVTZ
hartree fock HF s1c1t1 s1c1t1 s1c1t1 s1c1t1
density functional B3LYP s1c1t1 s1c1t1 s1c1t1 s1c1t1
Moller Plesset perturbation MP2 s1c1t1 s1c1t1 s1c1t1 s1c1t1
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.