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All results from a given calculation for B2H6 (Diborane)

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G*
 hartrees
Energy at 0K-9.104903
Energy at 298.15K-9.110722
Nuclear repulsion energy18.636538
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 B1B95/CEP-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 2614 2502 0.00      
2 Ag 2120 2029 0.00      
3 Ag 1158 1108 0.00      
4 Ag 806 771 0.00      
5 Au 835 799 0.00      
6 B1g 2709 2593 0.00      
7 B1g 912 873 0.00      
8 B1u 1980 1895 22.02      
9 B1u 981 939 4.07      
10 B2g 1888 1808 0.00      
11 B2g 900 862 0.00      
12 B2u 2724 2608 203.68      
13 B2u 944 904 0.03      
14 B2u 333 319 13.11      
15 B3g 1049 1004 0.00      
16 B3u 2597 2486 179.67      
17 B3u 1747 1672 587.18      
18 B3u 1144 1095 66.58      

Unscaled Zero Point Vibrational Energy (zpe) 13720.3 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 13133.1 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 B1B95/CEP-31G*
ABC
2.64172 0.58878 0.54088

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.902 0.000 0.000
B2 -0.902 0.000 0.000
H3 0.000 0.000 0.977
H4 0.000 0.000 -0.977
H5 1.477 1.052 0.000
H6 1.477 -1.052 0.000
H7 -1.477 1.052 0.000
H8 -1.477 -1.052 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.80421.32951.32951.19841.19842.60092.6009
B21.80421.32951.32952.60092.60091.19841.1984
H31.32951.32951.95332.05922.05922.05922.0592
H41.32951.32951.95332.05922.05922.05922.0592
H51.19842.60092.05922.05922.10332.95343.6258
H61.19842.60092.05922.05922.10333.62582.9534
H72.60091.19842.05922.05922.95343.62582.1033
H82.60091.19842.05922.05923.62582.95342.1033

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 85.454 B1 H4 B2 85.454
H3 B1 H4 94.546 H3 B1 H5 108.985
H3 B1 H6 108.985 H3 B2 H4 94.546
H3 B2 H7 108.985 H3 B2 H8 108.985
H4 B1 H5 108.985 H4 B1 H6 108.985
H4 B2 H7 108.985 H4 B2 H8 108.985
H5 B1 H6 122.700 H7 B2 H8 122.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.554      
2 B -0.554      
3 H 0.224      
4 H 0.224      
5 H 0.165      
6 H 0.165      
7 H 0.165      
8 H 0.165      


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 -18.409 0.000 0.000
y 0.000 -16.946 0.000
z 0.000 0.000 -14.482
Traceless
 xyz
x -2.695 0.000 0.000
y 0.000 -0.500 0.000
z 0.000 0.000 3.195
Polar
3z2-r26.390
x2-y2-1.463
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.221 0.000 0.000
y 0.000 3.144 0.000
z 0.000 0.000 2.769


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000