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

using model chemistry: QCISD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-50.597608
Energy at 298.15K-50.597574
HF Energy-50.433666
Nuclear repulsion energy15.330693
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/6-311G**
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 2829 2699 0.00      
2 Σg 1264 1206 0.00      
3 Σu 2789 2661 25.80      
4 Πg 505 482 0.00      
4 Πg 505 482 0.00      
5 Πu 630 601 0.20      
5 Πu 630 601 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 4575.8 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 4365.8 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/6-311G**
B
0.83555

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.757
B2 0.000 0.000 -0.757
H3 0.000 0.000 1.935
H4 0.000 0.000 -1.935

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51481.17732.6921
B21.51482.69211.1773
H31.17732.69213.8695
H42.69211.17733.8695

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