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III.F.2.

Completed calculations for C2H4- (Ethylene anion)

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
semi-empirical AM1 c1ov
PM3 c1o
composite G1 c1e
G2MP2 c1e
G2 c1e
G3 c1e
G3B3 c1e
G3MP2 c1e
G4 c1e
CBS-Q c1e

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 cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
hartree fock HF c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c2ov c1o c1o c1o c1ov c1ov c1ov
ROHF c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o c1o c1ov c1ov c1ov
density functional LSDA c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o c1o c1ov c1ov c1ov
SVWN   c1o     c1o   c1o                    
BLYP c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o        
B1B95 c1o c1o c1o c1o c1o c1o c1ov c1o c1o c1o   c1o c1o c1o c1ov c1ov c1o
B3LYP c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c2ov c1o c1o c1o c1ov c1ov c1ov
B3LYPultrafine         c1o                     c1ov  
B3PW91 c1o c1o c1o c1o c1o c1o c1ov c1o c1o c1o   c1o c1o        
mPW1PW91 c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o        
M06-2X         c1o                        
PBEPBE c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o c1o     c1ov
PBE1PBE         c1o                        
HSEh1PBE         c1o                        
TPSSh         c1o   c1ov                    
Moller Plesset perturbation MP2 c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o c2ov c1o c1o   c1ov    
MP2=FULL c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o        
ROMP2 c1o c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o c1o c1o c1ov c1ov c1ov
MP3         c1o   c1o                    
MP3=FULL         c1o   c1o                    
MP4   c1o     c1o       c1o                
B2PLYP         c1o               c1o        
Configuration interaction CID   c1o c1o c1o c1o     c1o                  
CISD   c1o c1o c1o c1o     c1o                  
Quadratic configuration interaction QCISD   c1o c1o c1o c1o c1o   c1o c1o c1o   c1o          
QCISD(T)         c1o                        
Coupled Cluster CCD   c1o c1o c1o c1o c1o c1o c1o c1o c1o   c1o     c1o    
CCSD(T)=FULL         c1o                        

Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD
hartree fock HF c1o c1o c1o c1o c1o c1o
density functional B3LYP c1o c1o c1o c1o c1o c1o
Moller Plesset perturbation MP2 c1o c1o c1o c1o c1o c1o

Single point energy calculations (select basis sets)
cc-pVTZ aug-cc-pVTZ
Moller Plesset perturbation MP2FC// B3LYP/6-31G* c1e  
MP2FC// MP2FC/6-31G*   c1e
Coupled Cluster CCSD(T)// B3LYP/6-31G* c1e  
CCSD// MP2FC/6-31G*   c1e
CCSD(T)// MP2FC/6-31G*   c1e
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.