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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-53.242052
Energy at 298.15K-53.247963
HF Energy-53.242052
Nuclear repulsion energy31.985729
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 2652 2540 0.00      
2 Ag 2185 2093 0.00      
3 Ag 1202 1151 0.00      
4 Ag 807 773 0.00      
5 Au 866 830 0.00      
6 B1g 2736 2621 0.00      
7 B1g 953 912 0.00      
8 B1u 1992 1908 15.41      
9 B1u 1001 959 10.59      
10 B2g 1853 1775 0.00      
11 B2g 895 857 0.00      
12 B2u 2752 2635 183.20      
13 B2u 966 925 0.63      
14 B2u 375 359 10.70      
15 B3g 1045 1001 0.00      
16 B3u 2638 2526 142.21      
17 B3u 1696 1624 458.35      
18 B3u 1204 1153 70.46      

Unscaled Zero Point Vibrational Energy (zpe) 13908.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 13320.3 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
2.68249 0.60413 0.55607

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 0.886 0.000 0.000
B2 -0.886 0.000 0.000
H3 0.000 0.000 0.980
H4 0.000 0.000 -0.980
H5 1.467 1.039 0.000
H6 1.467 -1.039 0.000
H7 -1.467 1.039 0.000
H8 -1.467 -1.039 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.77251.32141.32141.18981.18982.57212.5721
B21.77251.32141.32142.57212.57211.18981.1898
H31.32141.32141.96032.04722.04722.04722.0472
H41.32141.32141.96032.04722.04722.04722.0472
H51.18982.57212.04722.04722.07712.93373.5946
H61.18982.57212.04722.04722.07713.59462.9337
H72.57211.18982.04722.04722.93373.59462.0771
H82.57211.18982.04722.04723.59462.93372.0771

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.239 B1 H4 B2 84.239
H3 B1 H4 95.761 H3 B1 H5 109.104
H3 B1 H6 109.104 H3 B2 H4 95.761
H3 B2 H7 109.104 H3 B2 H8 109.104
H4 B1 H5 109.104 H4 B1 H6 109.104
H4 B2 H7 109.104 H4 B2 H8 109.104
H5 B1 H6 121.582 H7 B2 H8 121.582
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 -0.087      
2 B -0.087      
3 H 0.053      
4 H 0.053      
5 H 0.017      
6 H 0.017      
7 H 0.017      
8 H 0.017      


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 -18.454 0.000 0.000
y 0.000 -17.518 0.000
z 0.000 0.000 -14.912
Traceless
 xyz
x -2.240 0.000 0.000
y 0.000 -0.835 0.000
z 0.000 0.000 3.074
Polar
3z2-r26.148
x2-y2-0.937
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.445 0.000 0.000
y 0.000 3.936 0.000
z 0.000 0.000 3.133


<r2> (average value of r2) Å2
<r2> 33.290
(<r2>)1/2 5.770