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: PBEPBE/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBE/daug-cc-pVTZ
 hartrees
Energy at 0K-53.187528
Energy at 298.15K-53.193269
HF Energy-53.187528
Nuclear repulsion energy32.024983
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 PBEPBE/daug-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 Ag 2559 2559 0.00 328.05 0.06 0.12
2 Ag 2141 2141 0.00 89.32 0.04 0.08
3 Ag 1151 1151 0.00 7.43 0.58 0.74
4 Ag 794 794 0.00 18.36 0.14 0.25
5 Au 826 826 0.00 0.00 0.50 0.67
6 B1g 2634 2634 0.00 128.04 0.75 0.86
7 B1g 905 905 0.00 0.39 0.75 0.86
8 B1u 1994 1994 1.71 0.00 0.00 0.00
9 B1u 951 951 19.17 0.00 0.00 0.00
10 B2g 1843 1843 0.00 3.20 0.75 0.86
11 B2g 875 875 0.00 0.00 0.75 0.86
12 B2u 2649 2649 151.40 0.00 0.00 0.00
13 B2u 868 868 0.00 0.00 0.00 0.00
14 B2u 306 306 17.65 0.00 0.00 0.00
15 B3g 937 937 0.00 5.54 0.75 0.86
16 B3u 2546 2546 134.75 0.00 0.00 0.00
17 B3u 1671 1671 344.99 0.00 0.00 0.00
18 B3u 1146 1146 56.84 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13397.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13397.9 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 PBEPBE/daug-cc-pVTZ
ABC
2.65035 0.61205 0.56224

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.878 0.000 0.000
B2 -0.878 0.000 0.000
H3 0.000 0.000 0.986
H4 0.000 0.000 -0.986
H5 1.460 1.045 0.000
H6 1.460 -1.045 0.000
H7 -1.460 1.045 0.000
H8 -1.460 -1.045 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75651.32061.32061.19601.19602.56152.5615
B21.75651.32061.32062.56152.56151.19601.1960
H31.32061.32061.97232.04872.04872.04872.0487
H41.32061.32061.97232.04872.04872.04872.0487
H51.19602.56152.04872.04872.08952.92093.5914
H61.19602.56152.04872.04872.08953.59142.9209
H72.56151.19602.04872.04872.92093.59142.0895
H82.56151.19602.04872.04873.59142.92092.0895

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.376 B1 H4 B2 83.376
H3 B1 H4 96.624 H3 B1 H5 108.890
H3 B1 H6 108.890 H3 B2 H4 96.624
H3 B2 H7 108.890 H3 B2 H8 108.890
H4 B1 H5 108.890 H4 B1 H6 108.890
H4 B2 H7 108.890 H4 B2 H8 108.890
H5 B1 H6 121.741 H7 B2 H8 121.741
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.113      
2 B 0.113      
3 H 0.103      
4 H 0.103      
5 H -0.108      
6 H -0.108      
7 H -0.108      
8 H -0.108      


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 -19.013 0.000 0.000
y 0.000 -18.008 0.000
z 0.000 0.000 -14.927
Traceless
 xyz
x -2.545 0.000 0.000
y 0.000 -1.038 0.000
z 0.000 0.000 3.583
Polar
3z2-r27.166
x2-y2-1.004
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.246 0.000 0.000
y 0.000 5.085 0.000
z 0.000 0.000 4.353


<r2> (average value of r2) Å2
<r2> 33.372
(<r2>)1/2 5.777