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

using model chemistry: CCSD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-50.577316
Energy at 298.15K-50.577027
HF Energy-50.422362
Nuclear repulsion energy15.376536
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/6-31G**
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 2882 2687 0.00      
2 Σg 1292 1205 0.00      
3 Σu 2841 2649 34.22      
4 Πg 379 353 0.00      
4 Πg 379 353 0.00      
5 Πu 608 567 2.44      
5 Πu 608 567 2.44      

Unscaled Zero Point Vibrational Energy (zpe) 4494.0 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 4191.1 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/6-31G**
B
0.84030

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.755
B2 0.000 0.000 -0.755
H3 0.000 0.000 1.928
H4 0.000 0.000 -1.928

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51091.17292.6838
B21.51092.68381.1729
H31.17292.68383.8568
H42.68381.17293.8568

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