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 B2H6 (Diborane)

using model chemistry: wB97X-D/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at wB97X-D/CEP-31G
 hartrees
Energy at 0K-9.140211
Energy at 298.15K-9.146092
HF Energy-9.140211
Nuclear repulsion energy18.529694
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 wB97X-D/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 2641 2641 0.00 237.55 0.15 0.26
2 Ag 2070 2070 0.00 75.42 0.20 0.33
3 Ag 1167 1167 0.00 17.72 0.75 0.85
4 Ag 801 801 0.00 23.66 0.34 0.51
5 Au 850 850 0.00 0.00 0.28 0.44
6 B1g 2722 2722 0.00 104.28 0.75 0.86
7 B1g 938 938 0.00 5.05 0.75 0.86
8 B1u 1937 1937 45.15 0.00 0.00 0.00
9 B1u 1006 1006 1.46 0.00 0.00 0.00
10 B2g 1849 1849 0.00 9.64 0.75 0.86
11 B2g 894 894 0.00 0.02 0.75 0.86
12 B2u 2739 2739 237.25 0.00 0.00 0.00
13 B2u 971 971 0.41 0.00 0.00 0.00
14 B2u 362 362 11.27 0.00 0.00 0.00
15 B3g 1081 1081 0.00 12.39 0.75 0.86
16 B3u 2619 2619 183.52 0.00 0.00 0.00
17 B3u 1692 1692 666.55 0.00 0.00 0.00
18 B3u 1153 1153 70.07 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13745.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13745.0 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 wB97X-D/CEP-31G
ABC
2.63356 0.57604 0.53087

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.914 0.000 0.000
B2 -0.914 0.000 0.000
H3 0.000 0.000 0.985
H4 0.000 0.000 -0.985
H5 1.486 1.050 0.000
H6 1.486 -1.050 0.000
H7 -1.486 1.050 0.000
H8 -1.486 -1.050 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.82861.34391.34391.19571.19572.62002.6200
B21.82861.34391.34392.62002.62001.19571.1957
H31.34391.34391.96992.06912.06912.06912.0691
H41.34391.34391.96992.06912.06912.06912.0691
H51.19572.62002.06912.06912.10032.97203.6392
H61.19572.62002.06912.06912.10033.63922.9720
H72.62001.19572.06912.06912.97203.63922.1003
H82.62001.19572.06912.06913.63922.97202.1003

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 85.739 B1 H4 B2 85.739
H3 B1 H4 94.261 H3 B1 H5 108.984
H3 B1 H6 108.984 H3 B2 H4 94.261
H3 B2 H7 108.984 H3 B2 H8 108.984
H4 B1 H5 108.984 H4 B1 H6 108.984
H4 B2 H7 108.984 H4 B2 H8 108.984
H5 B1 H6 122.871 H7 B2 H8 122.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.453      
2 B -0.453      
3 H 0.157      
4 H 0.157      
5 H 0.148      
6 H 0.148      
7 H 0.148      
8 H 0.148      


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 -18.355 0.000 0.000
y 0.000 -16.894 0.000
z 0.000 0.000 -14.844
Traceless
 xyz
x -2.486 0.000 0.000
y 0.000 -0.294 0.000
z 0.000 0.000 2.780
Polar
3z2-r25.560
x2-y2-1.461
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.197 0.000 0.000
y 0.000 3.038 0.000
z 0.000 0.000 2.753


<r2> (average value of r2) Å2
<r2> 30.629
(<r2>)1/2 5.534