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Calculated Frequencies for C6H6 (2,4-Hexadiyne) 1A1' D3h

19 07 18 15 43
InChI=1S/C6H6/c1-3-5-6-4-2/h1-2H3 INChIKey=PCTCNWZFDASPLA-UHFFFAOYSA-N


Click on an entry for details. A subscript indicates the number of imaginary frequencies.
An R subscript indicates raman activity data is available.
For a comparison of experimental versus calculated see section IV.C.1 Compare vibrational frequencies
Methods with predefined basis sets
semi-empirical PM6 freq
composite G4 freq
molecular mechanics DREIDING freq

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 daug-cc-pVTZ
hartree fock HF freq freq freq freq freq freq freq freq freq freq   freq1 freq freq   freq freq dnf
density functional LSDA       freq freq freq freq freq freq freq     freq freq dnf   freq  
BLYP freq freq   freq freq freq freq   freq freq     freq freq     freq  
B1B95 freq freq freq freq freq freq freq freq freq freq     freq freq dnf   freq  
B3LYP freq freq freq freq freq freq freq freq freq freq freq freq freq freq   freq freq  
B3LYPultrafine                           freq   freq1    
B3PW91 freq freq freq freq freq freq freq freq freq freq     freq freq freq   freq  
mPW1PW91 freq freq   freq freq freq freq freq freq freq     freq freq     freq  
M06-2X     freq1   freq1           freqR              
PBEPBE freq     freq freq freq freq freq freq freq freq   freq freq     freq  
PBEPBEultrafine         freq1                          
PBE1PBE         freq                          
HSEh1PBE   freq     freq   freq             freq        
TPSSh         freq1   freq1     freq1       freq1        
wB97X-D     freq   freq   freq   freq     freq freq freq   freq1    
B97D3   freq1     freq1   freq1   freq1   freq1 freq1   freq1   freq1   dnf
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 daug-cc-pVTZ
Moller Plesset perturbation MP2 freq       freq2     freq2       freq1 freq freq1     freq1  
MP2=FULL         freq                          
MP3=FULL         freq3   freq3                      
B2PLYP         freq1                 dnf        
B2PLYP=FULLultrafine         freq1R               freq1R freq1R   freq1    
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 daug-cc-pVTZ
Quadratic configuration interaction QCISD   freq                                
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 daug-cc-pVTZ

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   freq freq freq freq freq     freq1
density functional B1B95 freq freq              
B3LYP freq freq freq   freq freq     freq
PBEPBE                 freq
Moller Plesset perturbation MP2   freq   freq freq freq     freq1
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.
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