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: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-52.503534
Energy at 298.15K-52.509407
HF Energy-52.473564
Nuclear repulsion energy31.939951
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 B2PLYP/STO-3G
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 3062 3062 0.00 59.19 0.17 0.29
2 Ag 2363 2363 0.00 36.46 0.23 0.37
3 Ag 1355 1355 0.00 17.24 0.74 0.85
4 Ag 844 844 0.00 11.90 0.42 0.60
5 Au 943 943 0.00 0.00 0.00 0.00
6 B1g 3217 3217 0.00 42.73 0.75 0.86
7 B1g 1032 1032 0.00 7.39 0.75 0.86
8 B1u 2229 2229 0.20 0.00 0.00 0.00
9 B1u 1118 1118 50.91 0.00 0.00 0.00
10 B2g 1880 1880 0.00 10.00 0.75 0.86
11 B2g 905 905 0.00 0.53 0.75 0.86
12 B2u 3219 3219 2.76 0.00 0.00 0.00
13 B2u 1121 1121 1.11 0.00 0.00 0.00
14 B2u 399 399 17.13 0.00 0.00 0.00
15 B3g 1256 1256 0.00 18.26 0.75 0.86
16 B3u 3060 3060 13.52 0.00 0.00 0.00
17 B3u 1743 1743 664.47 0.00 0.00 0.00
18 B3u 1343 1343 119.84 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 15544.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15544.9 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 B2PLYP/STO-3G
ABC
2.73297 0.58944 0.54613

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.905 0.000 0.000
B2 -0.905 0.000 0.000
H3 0.000 0.000 0.984
H4 0.000 0.000 -0.984
H5 1.462 1.023 0.000
H6 1.462 -1.023 0.000
H7 -1.462 1.023 0.000
H8 -1.462 -1.023 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.80971.33651.33651.16501.16502.57882.5788
B21.80971.33651.33652.57882.57881.16501.1650
H31.33651.33651.96712.03782.03782.03782.0378
H41.33651.33651.96712.03782.03782.03782.0378
H51.16502.57882.03782.03782.04592.92493.5694
H61.16502.57882.03782.03782.04593.56942.9249
H72.57881.16502.03782.03782.92493.56942.0459
H82.57881.16502.03782.03783.56942.92492.0459

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 85.226 B1 H4 B2 85.226
H3 B1 H4 94.774 H3 B1 H5 108.907
H3 B1 H6 108.907 H3 B2 H4 94.774
H3 B2 H7 108.907 H3 B2 H8 108.907
H4 B1 H5 108.907 H4 B1 H6 108.907
H4 B2 H7 108.907 H4 B2 H8 108.907
H5 B1 H6 122.812 H7 B2 H8 122.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.031      
2 B 0.031      
3 H 0.017      
4 H 0.017      
5 H -0.024      
6 H -0.024      
7 H -0.024      
8 H -0.024      


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 -17.793 0.000 0.000
y 0.000 -16.301 0.000
z 0.000 0.000 -14.197
Traceless
 xyz
x -2.544 0.000 0.000
y 0.000 -0.306 0.000
z 0.000 0.000 2.850
Polar
3z2-r25.699
x2-y2-1.492
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.890 0.000 0.000
y 0.000 1.796 0.000
z 0.000 0.000 1.489


<r2> (average value of r2) Å2
<r2> 32.916
(<r2>)1/2 5.737