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All results from a given calculation for B2H6 (Diborane)

using model chemistry: B3PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-53.269825
Energy at 298.15K-53.275662
HF Energy-53.269825
Nuclear repulsion energy32.077362
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(2df,p)
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 2629 2527 0.00 212.14 0.12 0.21
2 Ag 2188 2103 0.00 68.72 0.08 0.16
3 Ag 1193 1147 0.00 13.03 0.72 0.84
4 Ag 811 780 0.00 17.10 0.20 0.33
5 Au 844 812 0.00 0.00 0.00 0.00
6 B1g 2709 2604 0.00 103.12 0.75 0.86
7 B1g 929 894 0.00 1.95 0.75 0.86
8 B1u 2026 1948 9.31 0.00 0.00 0.00
9 B1u 986 948 23.60 0.00 0.00 0.00
10 B2g 1874 1801 0.00 3.77 0.75 0.86
11 B2g 892 858 0.00 1.10 0.75 0.86
12 B2u 2723 2618 146.23 0.00 0.00 0.00
13 B2u 922 886 0.00 0.00 0.00 0.00
14 B2u 331 318 17.70 0.00 0.00 0.00
15 B3g 1001 962 0.00 19.57 0.75 0.86
16 B3u 2616 2515 144.15 0.00 0.00 0.00
17 B3u 1714 1648 404.60 0.00 0.00 0.00
18 B3u 1185 1140 65.63 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13785.4 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 13253.2 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 B3PW91/6-31G(2df,p)
ABC
2.67213 0.61157 0.56204

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

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 0.981
H4 0.000 0.000 -0.981
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
B11.75981.31781.31781.19111.19112.55982.5598
B21.75981.31781.31782.55982.55981.19111.1911
H31.31781.31781.96202.04292.04292.04292.0429
H41.31781.31781.96202.04292.04292.04292.0429
H51.19112.55982.04292.04292.08212.91723.5840
H61.19112.55982.04292.04292.08213.58402.9172
H72.55981.19112.04292.04292.91723.58402.0821
H82.55981.19112.04292.04293.58402.91722.0821

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.783 B1 H4 B2 83.783
H3 B1 H4 96.217 H3 B1 H5 108.930
H3 B1 H6 108.930 H3 B2 H4 96.217
H3 B2 H7 108.930 H3 B2 H8 108.930
H4 B1 H5 108.930 H4 B1 H6 108.930
H4 B2 H7 108.930 H4 B2 H8 108.930
H5 B1 H6 121.863 H7 B2 H8 121.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.158      
2 B -0.158      
3 H 0.157      
4 H 0.157      
5 H 0.000      
6 H 0.000      
7 H 0.000      
8 H 0.000      


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 -18.451 0.000 0.000
y 0.000 -17.346 0.000
z 0.000 0.000 -14.424
Traceless
 xyz
x -2.567 0.000 0.000
y 0.000 -0.908 0.000
z 0.000 0.000 3.475
Polar
3z2-r26.950
x2-y2-1.106
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.471 0.000 0.000
y 0.000 4.180 0.000
z 0.000 0.000 3.400


<r2> (average value of r2) Å2
<r2> 32.968
(<r2>)1/2 5.742