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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: CCSD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at CCSD/aug-cc-pVDZ
 hartrees
Energy at 0K-50.586830
Energy at 298.15K-50.586839
HF Energy-50.426882
Nuclear repulsion energy15.158292
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2805 2703 0.00      
2 Σg 1253 1207 0.00      
3 Σu 2764 2662 30.73      
4 Πg 539 519 0.00      
4 Πg 539 519 0.00      
5 Πu 622 599 0.03      
5 Πu 622 599 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 4571.5 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 4404.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVDZ
B
0.81618

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.767
B2 0.000 0.000 -0.767
H3 0.000 0.000 1.955
H4 0.000 0.000 -1.955

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.53381.18822.7220
B21.53382.72201.1882
H31.18822.72203.9103
H42.72201.18823.9103

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability