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 B2H4 (Diborane(4) D2d)

using model chemistry: B97D3/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-52.024783
Energy at 298.15K-52.027152
HF Energy-52.024783
Nuclear repulsion energy22.297606
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 B97D3/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2506 2468 0.00      
2 A1 1161 1144 0.00      
3 A1 857 843 0.00      
4 B1 568 559 0.00      
5 B2 2485 2447 62.38      
6 B2 1098 1082 0.91      
7 E 2546 2507 82.14      
7 E 2546 2507 82.14      
8 E 967 952 22.20      
8 E 967 952 22.20      
9 E 368 363 3.11      
9 E 368 363 3.11      

Unscaled Zero Point Vibrational Energy (zpe) 8218.8 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 8093.1 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 B97D3/aug-cc-pVTZ
ABC
4.02994 0.66481 0.66481

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.816
B2 0.000 0.000 -0.816
H3 0.000 1.019 1.461
H4 0.000 -1.019 1.461
H5 1.019 0.000 -1.461
H6 -1.019 0.000 -1.461

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63221.20551.20552.49422.4942
B21.63222.49422.49421.20551.2055
H31.20552.49422.03733.25723.2572
H41.20552.49422.03733.25723.2572
H52.49421.20553.25723.25722.0373
H62.49421.20553.25723.25722.0373

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 122.324 B1 B2 H6 122.324
B2 B1 H3 122.324 B2 B1 H4 122.324
H3 B1 H4 115.352 H5 B2 H6 115.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.057      
2 B -0.057      
3 H 0.028      
4 H 0.028      
5 H 0.028      
6 H 0.028      


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
Primitive
 xyz
x -14.764 0.000 0.000
y 0.000 -14.764 0.000
z 0.000 0.000 -16.679
Traceless
 xyz
x 0.957 0.000 0.000
y 0.000 0.957 0.000
z 0.000 0.000 -1.915
Polar
3z2-r2-3.829
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.370 0.000 0.000
y 0.000 4.370 0.000
z 0.000 0.000 6.494


<r2> (average value of r2) Å2
<r2> 28.965
(<r2>)1/2 5.382