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: M06-2X/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at M06-2X/6-31+G**
 hartrees
Energy at 0K-53.244670
Energy at 298.15K-53.250556
HF Energy-53.244670
Nuclear repulsion energy32.154416
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 M06-2X/6-31+G**
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 2672 2544 0.00 250.52 0.12 0.21
2 Ag 2219 2113 0.00 95.34 0.09 0.16
3 Ag 1207 1149 0.00 11.68 0.70 0.83
4 Ag 812 773 0.00 17.69 0.20 0.34
5 Au 857 816 0.00 0.00 0.08 0.00
6 B1g 2752 2621 0.00 110.68 0.75 0.86
7 B1g 936 891 0.00 1.92 0.75 0.86
8 B1u 2046 1948 16.05 0.00 0.00 0.00
9 B1u 999 951 16.66 0.00 0.75 0.86
10 B2g 1904 1813 0.00 4.72 0.75 0.86
11 B2g 889 847 0.00 4.55 0.75 0.86
12 B2u 2766 2634 193.47 0.00 0.00 0.00
13 B2u 965 919 2.10 0.00 0.00 0.00
14 B2u 351 334 12.46 0.00 0.00 0.00
15 B3g 1058 1008 0.00 25.10 0.75 0.86
16 B3u 2657 2530 153.19 0.00 0.00 0.00
17 B3u 1746 1663 530.80 0.00 0.00 0.00
18 B3u 1198 1141 78.34 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 14017.4 cm-1
Scaled (by 0.9522) Zero Point Vibrational Energy (zpe) 13347.4 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 M06-2X/6-31+G**
ABC
2.68723 0.61363 0.56346

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.880 0.000 0.000
B2 -0.880 0.000 0.000
H3 0.000 0.000 0.974
H4 0.000 0.000 -0.974
H5 1.454 1.040 0.000
H6 1.454 -1.040 0.000
H7 -1.454 1.040 0.000
H8 -1.454 -1.040 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75931.31271.31271.18791.18792.55472.5547
B21.75931.31271.31272.55472.55471.18791.1879
H31.31271.31271.94872.03572.03572.03572.0357
H41.31271.31271.94872.03572.03572.03572.0357
H51.18792.55472.03572.03572.07992.90763.5749
H61.18792.55472.03572.03572.07993.57492.9076
H72.55471.18792.03572.03572.90763.57492.0799
H82.55471.18792.03572.03573.57492.90762.0799

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.154 B1 H4 B2 84.154
H3 B1 H4 95.846 H3 B1 H5 108.897
H3 B1 H6 108.897 H3 B2 H4 95.846
H3 B2 H7 108.897 H3 B2 H8 108.897
H4 B1 H5 108.897 H4 B1 H6 108.897
H4 B2 H7 108.897 H4 B2 H8 108.897
H5 B1 H6 122.197 H7 B2 H8 122.197
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.058      
2 B -0.058      
3 H 0.035      
4 H 0.035      
5 H 0.012      
6 H 0.012      
7 H 0.012      
8 H 0.012      


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 -18.765 0.000 0.000
y 0.000 -17.973 0.000
z 0.000 0.000 -15.005
Traceless
 xyz
x -2.276 0.000 0.000
y 0.000 -1.088 0.000
z 0.000 0.000 3.364
Polar
3z2-r26.728
x2-y2-0.792
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.643 0.000 0.000
y 0.000 4.420 0.000
z 0.000 0.000 3.426


<r2> (average value of r2) Å2
<r2> 33.189
(<r2>)1/2 5.761