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All results from a given calculation for B2H6 (Diborane)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-52.981477
Energy at 298.15K-52.987400
HF Energy-52.981477
Nuclear repulsion energy32.026774
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 B3LYP/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 2674 2580 0.00 206.13 0.11 0.19
2 Ag 2181 2104 0.00 87.86 0.11 0.19
3 Ag 1201 1159 0.00 15.28 0.75 0.85
4 Ag 799 771 0.00 16.99 0.25 0.40
5 Au 882 851 0.00 0.00 0.00 0.00
6 B1g 2762 2665 0.00 89.20 0.75 0.86
7 B1g 917 885 0.00 1.59 0.75 0.86
8 B1u 1960 1892 19.28 0.00 0.00 0.00
9 B1u 1004 968 11.37 0.00 0.00 0.00
10 B2g 1853 1788 0.00 5.43 0.75 0.86
11 B2g 888 857 0.00 2.61 0.75 0.86
12 B2u 2776 2679 132.84 0.00 0.00 0.00
13 B2u 971 937 0.61 0.00 0.00 0.00
14 B2u 379 366 10.34 0.00 0.00 0.00
15 B3g 1104 1066 0.00 39.50 0.75 0.86
16 B3u 2663 2569 112.87 0.00 0.00 0.00
17 B3u 1723 1663 471.71 0.00 0.00 0.00
18 B3u 1204 1162 70.75 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 13970.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 13480.1 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 B3LYP/3-21G
ABC
2.67822 0.60646 0.55738

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

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 0.977
H4 0.000 0.000 -0.977
H5 1.460 1.041 0.000
H6 1.460 -1.041 0.000
H7 -1.460 1.041 0.000
H8 -1.460 -1.041 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.77191.31871.31871.18901.18902.56652.5665
B21.77191.31871.31872.56652.56651.18901.1890
H31.31871.31871.95372.04202.04202.04202.0420
H41.31871.31871.95372.04202.04202.04202.0420
H51.18902.56652.04202.04202.08262.91973.5863
H61.18902.56652.04202.04202.08263.58632.9197
H72.56651.18902.04202.04202.91973.58632.0826
H82.56651.18902.04202.04203.58632.91972.0826

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 84.413 B1 H4 B2 84.413
H3 B1 H4 95.587 H3 B1 H5 108.922
H3 B1 H6 108.922 H3 B2 H4 95.587
H3 B2 H7 108.922 H3 B2 H8 108.922
H4 B1 H5 108.922 H4 B1 H6 108.922
H4 B2 H7 108.922 H4 B2 H8 108.922
H5 B1 H6 122.276 H7 B2 H8 122.276
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.247      
2 B -0.247      
3 H 0.101      
4 H 0.101      
5 H 0.073      
6 H 0.073      
7 H 0.073      
8 H 0.073      


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 -18.648 0.000 0.000
y 0.000 -17.934 0.000
z 0.000 0.000 -15.425
Traceless
 xyz
x -1.968 0.000 0.000
y 0.000 -0.898 0.000
z 0.000 0.000 2.866
Polar
3z2-r25.731
x2-y2-0.713
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.279 0.000 0.000
y 0.000 3.629 0.000
z 0.000 0.000 3.044


<r2> (average value of r2) Å2
<r2> 33.447
(<r2>)1/2 5.783