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III.F.2.

Completed calculations for Be2 (Beryllium diatomic)

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 s1ov s2ov
PM3 s1ov s2ov
composite G1 s1e s2e
G2MP2 s1e s2e
G2 s1e s2e
G3 s1e s2e
G3B3 s1e s2e
G4 s1e s2e
CBS-Q s1e s2e

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 cc-pCVDZ cc-pCVTZ
hartree fock HF s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov    
ROHF   s2ov s2ov s2ov s2ov s2ov s2ov s2ov s2ov     s2ov s2ov s2ov s2ov s2ov s2ov s2ov    
density functional LSDA s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
SVWN   s1ov s2ov     s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov     s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
BLYP s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s2ov        
B1B95 s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
B3LYP s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov    
B3LYPultrafine         s1ov s2ov             s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
B3PW91 s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s2ov        
mPW1PW91 s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
M06-2X s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
PBEPBE s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
PBEPBEultrafine         s1ov s2ov             s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
PBE1PBE s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
HSEh1PBE s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
TPSSh   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov       s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
Moller Plesset perturbation MP2 s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s2ov s2ov
MP2=FULL s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s2ov s2ov
ROMP2 s2ov s2ov s2ov s2ov s2ov s2ov s2ov s2ov s2ov s2ov   s2ov s2ov s2ov   s2ov        
MP3         s1ov s2ov   s1ov s2ov         s1ov s2ov s1ov s2ov s1ov s2ov            
MP3=FULL         s1ov s2ov   s1ov s2ov         s1ov s2ov s1ov s2ov s1ov s2ov            
MP4   s1ov s2ov     s1ov s2ov     s2ov s1ov s2ov     s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
MP4=FULL   s1ov s2ov     s1ov s2ov       s1ov s2ov       s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
B2PLYP s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov   s1ov s1ov s1ov   s1ov s1ov      
B2PLYP=FULL s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov s1ov   s1ov s1ov s1ov   s1ov s1ov      
Configuration interaction CID   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov     s1ov s2ov                        
CISD   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov     s1ov s2ov                        
Quadratic configuration interaction QCISD   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
QCISD(T)         s1ov s2ov             s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
QCISD(TQ)         s1ov                 s1ov     s1ov s1ov    
QCISD(TQ)=FULL                           s1ov s1ov   s1ov s1ov    
Coupled Cluster CCD   s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov s1ov s2ov   s1ov s2ov s1ov s2ov      
CCSD         s1ov s2ov     s2ov       s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov    
CCSD=FULL         s1ov s2ov             s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov    
CCSD(T)         s1ov s2ov s2ov   s2ov     s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s2ov s2ov
CCSD(T)=FULL         s1ov s2ov             s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s2ov s2ov

Methods with effective core potentials (select basis sets)
CEP-31G CEP-31G* CEP-121G CEP-121G* LANL2DZ SDD
hartree fock HF s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov
density functional B1B95 s1ov          
B3LYP s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov
Moller Plesset perturbation MP2 s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov s1ov s2ov

Single point energy calculations (select basis sets)
6-311+G(3df,2p) cc-pVDZ cc-pVTZ aug-cc-pVTZ
Moller Plesset perturbation MP2FC// HF/6-31G* s2e      
MP2FC// B3LYP/6-31G*     s2e  
MP2FC// MP2FC/6-31G*       s2e
MP4// HF/6-31G* s1e   s1e  
MP4// B3LYP/6-31G*   s1e s1e  
MP4// MP2/6-31G*     s1e  
Coupled Cluster CCSD(T)// HF/6-31G* s2e      
CCSD(T)// B3LYP/6-31G* s1e   s2e  
CCSD(T)// MP2FC/6-31G* s1e     s2e
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.