return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: TPSSh/daug-cc-pVDZ

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 TPSSh/daug-cc-pVDZ
 hartrees
Energy at 0K-50.786133
Energy at 298.15K-50.786147
HF Energy-50.786133
Nuclear repulsion energy15.236881
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 TPSSh/daug-cc-pVDZ
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 2817 2817 0.00      
2 Σg 1250 1250 0.00      
3 Σu 2773 2773 34.39      
4 Πg 554 554 0.00      
4 Πg 554 554 0.00      
5 Πu 606 606 0.03      
5 Πu 606 606 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 4580.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4580.8 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 TPSSh/daug-cc-pVDZ
B
0.82494

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/daug-cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.763
B2 0.000 0.000 -0.763
H3 0.000 0.000 1.946
H4 0.000 0.000 -1.946

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52521.18312.7083
B21.52522.70831.1831
H31.18312.70833.8913
H42.70831.18313.8913

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
Charges from optimized geometry at TPSSh/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.287      
2 B -0.287      
3 H 0.287      
4 H 0.287      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.366 0.000 0.000
y 0.000 4.366 0.000
z 0.000 0.000 7.334


<r2> (average value of r2) Å2
<r2> 21.819
(<r2>)1/2 4.671