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: B3LYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/6-311G**
 hartrees
Energy at 0K-53.304407
Energy at 298.15K-53.310288
HF Energy-53.304407
Nuclear repulsion energy32.113761
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 B3LYP/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 Ag 2612 2525 0.00 260.70 0.12 0.21
2 Ag 2167 2095 0.00 77.99 0.07 0.14
3 Ag 1199 1159 0.00 10.44 0.69 0.82
4 Ag 798 771 0.00 18.31 0.18 0.30
5 Au 849 821 0.00 0.00 0.00 0.00
6 B1g 2687 2598 0.00 119.37 0.75 0.86
7 B1g 936 905 0.00 0.82 0.75 0.86
8 B1u 1982 1916 8.79 0.00 0.00 0.00
9 B1u 991 958 16.68 0.00 0.00 0.00
10 B2g 1846 1784 0.00 4.87 0.75 0.86
11 B2g 893 863 0.00 3.52 0.75 0.86
12 B2u 2702 2612 179.41 0.00 0.00 0.00
13 B2u 948 917 0.21 0.00 0.00 0.00
14 B2u 356 344 16.30 0.00 0.00 0.00
15 B3g 1021 987 0.00 29.71 0.75 0.86
16 B3u 2599 2513 146.71 0.00 0.00 0.00
17 B3u 1701 1645 469.83 0.00 0.00 0.00
18 B3u 1190 1150 75.31 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13738.3 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 13282.2 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 B3LYP/6-311G**
ABC
2.69427 0.61020 0.56116

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.882 0.000 0.000
B2 -0.882 0.000 0.000
H3 0.000 0.000 0.976
H4 0.000 0.000 -0.976
H5 1.459 1.037 0.000
H6 1.459 -1.037 0.000
H7 -1.459 1.037 0.000
H8 -1.459 -1.037 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76401.31571.31571.18651.18652.56002.5600
B21.76401.31571.31572.56002.56001.18651.1865
H31.31571.31571.95262.03862.03862.03862.0386
H41.31571.31571.95262.03862.03862.03862.0386
H51.18652.56002.03862.03862.07412.91713.5793
H61.18652.56002.03862.03862.07413.57932.9171
H72.56001.18652.03862.03862.91713.57932.0741
H82.56001.18652.03862.03863.57932.91712.0741

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.189 B1 H4 B2 84.189
H3 B1 H4 95.811 H3 B1 H5 109.009
H3 B1 H6 109.009 H3 B2 H4 95.811
H3 B2 H7 109.009 H3 B2 H8 109.009
H4 B1 H5 109.009 H4 B1 H6 109.009
H4 B2 H7 109.009 H4 B2 H8 109.009
H5 B1 H6 121.858 H7 B2 H8 121.858
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.092      
2 B -0.092      
3 H 0.071      
4 H 0.071      
5 H 0.010      
6 H 0.010      
7 H 0.010      
8 H 0.010      


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 -19.005 0.000 0.000
y 0.000 -18.027 0.000
z 0.000 0.000 -14.964
Traceless
 xyz
x -2.510 0.000 0.000
y 0.000 -1.043 0.000
z 0.000 0.000 3.553
Polar
3z2-r27.105
x2-y2-0.978
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.834 0.000 0.000
y 0.000 4.551 0.000
z 0.000 0.000 3.547


<r2> (average value of r2) Å2
<r2> 33.322
(<r2>)1/2 5.773