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All results from a given calculation for B2H6 (Diborane)

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-53.165976
Energy at 298.15K-53.171719
HF Energy-53.165976
Nuclear repulsion energy31.890288
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 PBEPBE/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 2591 2554 0.00 217.36 0.12 0.22
2 Ag 2169 2138 0.00 74.97 0.09 0.16
3 Ag 1160 1143 0.00 15.76 0.72 0.83
4 Ag 793 782 0.00 15.89 0.22 0.36
5 Au 832 820 0.00 0.00 0.00 0.00
6 B1g 2671 2632 0.00 107.60 0.75 0.86
7 B1g 915 902 0.00 2.28 0.75 0.86
8 B1u 2023 1994 7.87 0.00 0.00 0.00
9 B1u 962 949 14.62 0.00 0.75 0.86
10 B2g 1851 1825 0.00 4.43 0.75 0.86
11 B2g 878 866 0.00 4.48 0.75 0.86
12 B2u 2684 2646 152.58 0.00 0.00 0.00
13 B2u 894 881 0.00 0.00 0.00 0.00
14 B2u 299 295 14.66 0.00 0.00 0.00
15 B3g 978 964 0.00 34.43 0.75 0.86
16 B3u 2579 2542 133.84 0.00 0.00 0.00
17 B3u 1687 1663 354.51 0.00 0.00 0.00
18 B3u 1158 1141 57.94 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13561.3 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 13367.4 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 PBEPBE/6-31G*
ABC
2.63094 0.60618 0.55654

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.883 0.000 0.000
B2 -0.883 0.000 0.000
H3 0.000 0.000 0.987
H4 0.000 0.000 -0.987
H5 1.466 1.050 0.000
H6 1.466 -1.050 0.000
H7 -1.466 1.050 0.000
H8 -1.466 -1.050 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.76661.32451.32451.20091.20092.57352.5735
B21.76661.32451.32452.57352.57351.20091.2009
H31.32451.32451.97402.05582.05582.05582.0558
H41.32451.32451.97402.05582.05582.05582.0558
H51.20092.57352.05582.05582.09992.93253.6068
H61.20092.57352.05582.05582.09993.60682.9325
H72.57351.20092.05582.05582.93253.60682.0999
H82.57351.20092.05582.05583.60682.93252.0999

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.654 B1 H4 B2 83.654
H3 B1 H4 96.346 H3 B1 H5 108.887
H3 B1 H6 108.887 H3 B2 H4 96.346
H3 B2 H7 108.887 H3 B2 H8 108.887
H4 B1 H5 108.887 H4 B1 H6 108.887
H4 B2 H7 108.887 H4 B2 H8 108.887
H5 B1 H6 121.922 H7 B2 H8 121.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.184      
2 B -0.184      
3 H 0.121      
4 H 0.121      
5 H 0.031      
6 H 0.031      
7 H 0.031      
8 H 0.031      


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 -18.478 0.000 0.000
y 0.000 -17.398 0.000
z 0.000 0.000 -14.585
Traceless
 xyz
x -2.486 0.000 0.000
y 0.000 -0.867 0.000
z 0.000 0.000 3.353
Polar
3z2-r26.706
x2-y2-1.079
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.524 0.000 0.000
y 0.000 4.068 0.000
z 0.000 0.000 3.187


<r2> (average value of r2) Å2
<r2> 33.265
(<r2>)1/2 5.768