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All results from a given calculation for B2H6 (Diborane)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-52.497814
Energy at 298.15K-52.503880
HF Energy-52.497814
Nuclear repulsion energy32.049254
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/3-21G*
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 2762 2493 0.00 224.29 0.10 0.19
2 Ag 2260 2040 0.00 108.81 0.11 0.21
3 Ag 1287 1162 0.00 16.16 0.75 0.86
4 Ag 814 735 0.00 18.11 0.24 0.39
5 Au 926 836 0.00 0.00 0.30 0.47
6 B1g 2847 2570 0.00 90.12 0.75 0.86
7 B1g 968 874 0.00 1.44 0.75 0.86
8 B1u 1967 1775 68.01 0.00 0.00 0.00
9 B1u 1074 969 18.99 0.00 0.75 0.00
10 B2g 1916 1729 0.00 7.36 0.75 0.86
11 B2g 885 799 0.00 3.91 0.75 0.86
12 B2u 2861 2582 196.25 0.00 0.00 0.00
13 B2u 1136 1026 13.79 0.00 0.51 0.67
14 B2u 439 396 7.23 0.00 0.00 0.00
15 B3g 1233 1113 0.00 52.53 0.75 0.86
16 B3u 2746 2479 142.55 0.00 0.00 0.00
17 B3u 1821 1644 821.30 0.00 0.00 0.00
18 B3u 1280 1155 130.22 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14610.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 13187.2 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/3-21G*
ABC
2.71797 0.60115 0.55289

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.893 0.000 0.000
B2 -0.893 0.000 0.000
H3 0.000 0.000 0.965
H4 0.000 0.000 -0.965
H5 1.463 1.036 0.000
H6 1.463 -1.036 0.000
H7 -1.463 1.036 0.000
H8 -1.463 -1.036 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.78511.31461.31461.18231.18232.57282.5728
B21.78511.31461.31462.57282.57281.18231.1823
H31.31461.31461.93022.03552.03552.03552.0355
H41.31461.31461.93022.03552.03552.03552.0355
H51.18232.57282.03552.03552.07152.92523.5844
H61.18232.57282.03552.03552.07153.58442.9252
H72.57281.18232.03552.03552.92523.58442.0715
H82.57281.18232.03552.03553.58442.92522.0715

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 85.526 B1 H4 B2 85.526
H3 B1 H4 94.474 H3 B1 H5 109.109
H3 B1 H6 109.109 H3 B2 H4 94.474
H3 B2 H7 109.109 H3 B2 H8 109.109
H4 B1 H5 109.109 H4 B1 H6 109.109
H4 B2 H7 109.109 H4 B2 H8 109.109
H5 B1 H6 122.348 H7 B2 H8 122.348
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.070      
2 B -0.070      
3 H 0.007      
4 H 0.007      
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 -18.981 0.000 0.000
y 0.000 -18.626 0.000
z 0.000 0.000 -16.026
Traceless
 xyz
x -1.654 0.000 0.000
y 0.000 -1.123 0.000
z 0.000 0.000 2.777
Polar
3z2-r25.554
x2-y2-0.354
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.137 0.000 0.000
y 0.000 3.589 0.000
z 0.000 0.000 2.958


<r2> (average value of r2) Å2
<r2> 33.844
(<r2>)1/2 5.818