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

using model chemistry: QCISD(TQ)=FULL/6-31+G**

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 QCISD(TQ)=FULL/6-31+G**
 hartrees
Energy at 0K-50.596315
Energy at 298.15K-50.595820
HF Energy-50.425371
Nuclear repulsion energy15.335004
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 QCISD(TQ)=FULL/6-31+G**
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 2868 2868 0.00      
2 Σg 1263 1263 0.00      
3 Σu 2827 2827 0.00      
4 Πg 300 300 0.00      
4 Πg 300 300 0.00      
5 Πu 581 581 0.00      
5 Πu 581 581 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4360.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4360.5 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 QCISD(TQ)=FULL/6-31+G**
B
0.83533

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)=FULL/6-31+G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.758
B2 0.000 0.000 -0.758
H3 0.000 0.000 1.932
H4 0.000 0.000 -1.932

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51651.17362.6900
B21.51652.69001.1736
H31.17362.69003.8636
H42.69001.17363.8636

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