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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-50.690615
Energy at 298.15K-50.690639
HF Energy-50.648258
Nuclear repulsion energy15.383586
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 B2PLYP=FULL/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 2884 2735 0.00      
2 Σg 1287 1220 0.00      
3 Σu 2846 2700 31.36      
4 Πg 559 530 0.00      
4 Πg 559 530 0.00      
5 Πu 628 595 2.75      
5 Πu 628 595 2.75      

Unscaled Zero Point Vibrational Energy (zpe) 4694.8 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 4452.5 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 B2PLYP=FULL/6-31G*
B
0.84196

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.754
B2 0.000 0.000 -0.754
H3 0.000 0.000 1.930
H4 0.000 0.000 -1.930

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50801.17562.6835
B21.50802.68351.1756
H31.17562.68353.8591
H42.68351.17563.8591

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