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All results from a given calculation for B2H6 (Diborane)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-53.267951
Energy at 298.15K-53.273802
HF Energy-53.267951
Nuclear repulsion energy32.085679
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 B3PW91/6-31G**
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 2636 2527 0.00      
2 Ag 2205 2114 0.00      
3 Ag 1200 1150 0.00      
4 Ag 815 781 0.00      
5 Au 850 814 0.00      
6 B1g 2716 2603 0.00      
7 B1g 937 898 0.00      
8 B1u 2040 1955 12.97      
9 B1u 988 947 18.06      
10 B2g 1882 1804 0.00      
11 B2g 896 858 0.00      
12 B2u 2730 2616 167.17      
13 B2u 933 894 0.18      
14 B2u 339 325 14.27      
15 B3g 1014 972 0.00      
16 B3u 2622 2513 145.84      
17 B3u 1722 1650 409.46      
18 B3u 1194 1144 64.71      

Unscaled Zero Point Vibrational Energy (zpe) 13859.3 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 13282.8 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 B3PW91/6-31G**
ABC
2.67337 0.61214 0.56242

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.879 0.000 0.000
B2 -0.879 0.000 0.000
H3 0.000 0.000 0.980
H4 0.000 0.000 -0.980
H5 1.459 1.041 0.000
H6 1.459 -1.041 0.000
H7 -1.459 1.041 0.000
H8 -1.459 -1.041 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75841.31661.31661.19181.19182.55972.5597
B21.75841.31661.31662.55972.55971.19181.1918
H31.31661.31661.95992.04292.04292.04292.0429
H41.31661.31661.95992.04292.04292.04292.0429
H51.19182.55972.04292.04292.08232.91843.5851
H61.19182.55972.04292.04292.08233.58512.9184
H72.55971.19182.04292.04292.91843.58512.0823
H82.55971.19182.04292.04293.58512.91842.0823

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.794 B1 H4 B2 83.794
H3 B1 H4 96.206 H3 B1 H5 108.964
H3 B1 H6 108.964 H3 B2 H4 96.206
H3 B2 H7 108.964 H3 B2 H8 108.964
H4 B1 H5 108.964 H4 B1 H6 108.964
H4 B2 H7 108.964 H4 B2 H8 108.964
H5 B1 H6 121.759 H7 B2 H8 121.759
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.050      
2 B -0.050      
3 H 0.066      
4 H 0.066      
5 H -0.008      
6 H -0.008      
7 H -0.008      
8 H -0.008      


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 -18.403 0.000 0.000
y 0.000 -17.392 0.000
z 0.000 0.000 -14.536
Traceless
 xyz
x -2.439 0.000 0.000
y 0.000 -0.923 0.000
z 0.000 0.000 3.362
Polar
3z2-r26.723
x2-y2-1.010
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.434 0.000 0.000
y 0.000 4.048 0.000
z 0.000 0.000 3.194


<r2> (average value of r2) Å2
<r2> 32.982
(<r2>)1/2 5.743