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All results from a given calculation for B2H6 (Diborane)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-53.172679
Energy at 298.15K-53.178417
HF Energy-53.172679
Nuclear repulsion energy31.926528
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 PBEPBEultrafine/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 2576 2550 0.00 215.53 0.12 0.21
2 Ag 2147 2125 0.00 66.43 0.08 0.15
3 Ag 1154 1142 0.00 14.52 0.71 0.83
4 Ag 794 786 0.00 16.80 0.20 0.34
5 Au 824 815 0.00 0.00 0.00 0.00
6 B1g 2656 2629 0.00 106.89 0.75 0.86
7 B1g 906 896 0.00 2.27 0.75 0.86
8 B1u 2000 1979 4.75 0.00 0.00 0.00
9 B1u 958 948 21.20 0.00 0.00 0.00
10 B2g 1842 1823 0.00 3.34 0.75 0.86
11 B2g 874 865 0.00 1.13 0.75 0.86
12 B2u 2670 2642 130.33 0.00 0.00 0.00
13 B2u 870 861 0.14 0.00 0.00 0.00
14 B2u 299 296 18.59 0.00 0.00 0.00
15 B3g 942 932 0.00 18.59 0.75 0.86
16 B3u 2565 2539 132.40 0.00 0.00 0.00
17 B3u 1674 1657 333.99 0.00 0.00 0.00
18 B3u 1150 1138 56.45 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13449.7 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 13311.1 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 PBEPBEultrafine/6-31G(2df,p)
ABC
2.63858 0.60729 0.55786

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

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 0.987
H4 0.000 0.000 -0.987
H5 1.465 1.048 0.000
H6 1.465 -1.048 0.000
H7 -1.465 1.048 0.000
H8 -1.465 -1.048 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76491.32421.32421.19851.19852.57032.5703
B21.76491.32421.32422.57032.57031.19851.1985
H31.32421.32421.97452.05362.05362.05362.0536
H41.32421.32421.97452.05362.05362.05362.0536
H51.19852.57032.05362.05362.09522.92933.6015
H61.19852.57032.05362.05362.09523.60152.9293
H72.57031.19852.05362.05362.92933.60152.0952
H82.57031.19852.05362.05363.60152.92932.0952

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.584 B1 H4 B2 83.584
H3 B1 H4 96.416 H3 B1 H5 108.888
H3 B1 H6 108.888 H3 B2 H4 96.416
H3 B2 H7 108.888 H3 B2 H8 108.888
H4 B1 H5 108.888 H4 B1 H6 108.888
H4 B2 H7 108.888 H4 B2 H8 108.888
H5 B1 H6 121.876 H7 B2 H8 121.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.165      
2 B -0.165      
3 H 0.167      
4 H 0.167      
5 H -0.001      
6 H -0.001      
7 H -0.001      
8 H -0.001      


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 -18.547 0.000 0.000
y 0.000 -17.357 0.000
z 0.000 0.000 -14.452
Traceless
 xyz
x -2.643 0.000 0.000
y 0.000 -0.858 0.000
z 0.000 0.000 3.501
Polar
3z2-r27.001
x2-y2-1.190
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.610 0.000 0.000
y 0.000 4.257 0.000
z 0.000 0.000 3.444


<r2> (average value of r2) Å2
<r2> 33.191
(<r2>)1/2 5.761