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

using model chemistry: B2PLYP=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-50.391937
Energy at 298.15K-50.392062
HF Energy-50.364347
Nuclear repulsion energy15.334627
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/3-21G*
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 2897 2897 0.00      
2 Σg 1278 1278 0.00      
3 Σu 2848 2848 30.24      
4 Πg 624 624 0.00      
4 Πg 624 624 0.00      
5 Πu 642 642 3.12      
5 Πu 642 642 3.12      

Unscaled Zero Point Vibrational Energy (zpe) 4777.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4777.4 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/3-21G*
B
0.83493

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.759
B2 0.000 0.000 -0.759
H3 0.000 0.000 1.932
H4 0.000 0.000 -1.932

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51701.17332.6904
B21.51702.69041.1733
H31.17332.69043.8637
H42.69041.17333.8637

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