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Calculated Proton Affinity

15 11 04 06 09
Name Species   Species Name
Bromine atom Br HBr+ hydrogen bromide cation

Bonding changes

Bond type H-Br gained 1
Proton Affinities (kJ/mol)
Proton Affinities in kJ/mol
Methods with predefined basis sets
composite G3B3 525
G4 525

Proton Affinities in kJ/mol
Methods with standard basis sets
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
hartree fock HF     64         535      
density functional SVWN               531      
BLYP     559                
B3LYP               548      
M06-2X   533 533                
TPSSh     556 557     571     561  
wB97X-D   561 549 551   553   553 551 558 559
B97D3 546   570     566         571
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
Moller Plesset perturbation MP2     527   526     553      
MP3                      
MP3=FULL     534 551              
MP4                   575  
B2PLYP                   550  
3-21G 3-21G* 6-31G* 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ aug-cc-pVTZ
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.