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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-51.992362
Energy at 298.15K-51.994742
HF Energy-51.992362
Nuclear repulsion energy22.395490
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 B1B95/6-311G*
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 2558 2452 0.00      
2 A1 1191 1142 0.00      
3 A1 872 836 0.00      
4 B1 569 546 0.00      
5 B2 2535 2430 65.27      
6 B2 1121 1074 2.20      
7 E 2604 2497 84.39      
7 E 2604 2497 84.39      
8 E 971 931 25.44      
8 E 971 931 25.44      
9 E 374 358 2.65      
9 E 374 358 2.65      

Unscaled Zero Point Vibrational Energy (zpe) 8371.5 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 8024.9 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 B1B95/6-311G*
ABC
4.06212 0.67075 0.67075

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.813
B2 0.000 0.000 -0.813
H3 0.000 1.015 1.454
H4 0.000 -1.015 1.454
H5 1.015 0.000 -1.454
H6 -1.015 0.000 -1.454

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62521.20021.20022.48302.4830
B21.62522.48302.48301.20021.2002
H31.20022.48302.02923.24213.2421
H41.20022.48302.02923.24213.2421
H52.48301.20023.24213.24212.0292
H62.48301.20023.24213.24212.0292

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 122.286 B1 B2 H6 122.286
B2 B1 H3 122.286 B2 B1 H4 122.286
H3 B1 H4 115.428 H5 B2 H6 115.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.161      
2 B -0.161      
3 H 0.080      
4 H 0.080      
5 H 0.080      
6 H 0.080      


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 -14.694 0.000 0.000
y 0.000 -14.694 0.000
z 0.000 0.000 -16.587
Traceless
 xyz
x 0.947 0.000 0.000
y 0.000 0.947 0.000
z 0.000 0.000 -1.894
Polar
3z2-r2-3.788
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 3.669 0.000 0.000
y 0.000 3.669 0.000
z 0.000 0.000 5.896


<r2> (average value of r2) Å2
<r2> 28.745
(<r2>)1/2 5.361