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All results from a given calculation for B2H6 (Diborane)

using model chemistry: HF/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 HF/CEP-31G
 hartrees
Energy at 0K-8.782014
Energy at 298.15K-8.787996
HF Energy-8.782014
Nuclear repulsion energy18.539766
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 HF/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 2722 2454 0.00 247.93 0.15 0.26
2 Ag 2137 1926 0.00 90.91 0.19 0.33
3 Ag 1240 1118 0.00 18.16 0.75 0.86
4 Ag 802 723 0.00 22.47 0.33 0.50
5 Au 882 795 0.00 0.00 0.00 0.00
6 B1g 2800 2524 0.00 112.81 0.75 0.86
7 B1g 983 886 0.00 5.44 0.75 0.86
8 B1u 1914 1725 154.05 0.00 0.00 0.00
9 B1u 1055 951 4.58 0.00 0.00 0.00
10 B2g 1808 1629 0.00 10.88 0.75 0.86
11 B2g 803 724 0.00 0.21 0.75 0.86
12 B2u 2818 2540 361.43 0.00 0.00 0.00
13 B2u 1105 996 13.90 0.00 0.00 0.00
14 B2u 413 372 8.61 0.00 0.00 0.00
15 B3g 1196 1078 0.00 19.10 0.75 0.86
16 B3u 2694 2428 245.55 0.00 0.00 0.00
17 B3u 1743 1571 1097.14 0.00 0.00 0.00
18 B3u 1214 1095 162.12 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14163.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 12767.3 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 HF/CEP-31G
ABC
2.66459 0.56929 0.52499

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.923 0.000 0.000
B2 -0.923 0.000 0.000
H3 0.000 0.000 0.974
H4 0.000 0.000 -0.974
H5 1.489 1.046 0.000
H6 1.489 -1.046 0.000
H7 -1.489 1.046 0.000
H8 -1.489 -1.046 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.84621.34231.34231.18931.18932.62902.6290
B21.84621.34231.34232.62902.62901.18931.1893
H31.34231.34231.94892.06412.06412.06412.0641
H41.34231.34231.94892.06412.06412.06412.0641
H51.18932.62902.06412.06412.09242.97753.6392
H61.18932.62902.06412.06412.09243.63922.9775
H72.62901.18932.06412.06412.97753.63922.0924
H82.62901.18932.06412.06413.63922.97752.0924

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 86.899 B1 H4 B2 86.899
H3 B1 H4 93.101 H3 B1 H5 109.091
H3 B1 H6 109.091 H3 B2 H4 93.101
H3 B2 H7 109.091 H3 B2 H8 109.091
H4 B1 H5 109.091 H4 B1 H6 109.091
H4 B2 H7 109.091 H4 B2 H8 109.091
H5 B1 H6 123.206 H7 B2 H8 123.206
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.258      
2 B -0.258      
3 H 0.075      
4 H 0.075      
5 H 0.092      
6 H 0.092      
7 H 0.092      
8 H 0.092      


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 -18.551 0.000 0.000
y 0.000 -17.362 0.000
z 0.000 0.000 -15.257
Traceless
 xyz
x -2.241 0.000 0.000
y 0.000 -0.458 0.000
z 0.000 0.000 2.699
Polar
3z2-r25.398
x2-y2-1.188
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.006 0.000 0.000
y 0.000 2.952 0.000
z 0.000 0.000 2.631


<r2> (average value of r2) Å2
<r2> 30.909
(<r2>)1/2 5.560