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

using model chemistry: CCSD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-50.567182
Energy at 298.15K-50.566870
HF Energy-50.420255
Nuclear repulsion energy15.313042
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(T)/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 2838 2731 0.00      
2 Σg 1279 1230 0.00      
3 Σu 2800 2694 0.00      
4 Πg 379 365 0.00      
4 Πg 379 365 0.00      
5 Πu 595 573 0.00      
5 Πu 595 573 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4433.3 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 4265.2 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(T)/6-31G*
B
0.83508

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

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 1.940
H4 0.000 0.000 -1.940

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51321.18302.6962
B21.51322.69621.1830
H31.18302.69623.8791
H42.69621.18303.8791

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