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All results from a given calculation for B2H6 (Diborane)

using model chemistry: LSDA/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 LSDA/3-21G
 hartrees
Energy at 0K-52.628469
Energy at 298.15K-52.634243
HF Energy-52.628469
Nuclear repulsion energy32.089274
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 LSDA/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 2611 2568 0.00      
2 Ag 2162 2127 0.00      
3 Ag 1140 1122 0.00      
4 Ag 822 809 0.00      
5 Au 870 856 0.00      
6 B1g 2705 2661 0.00      
7 B1g 891 876 0.00      
8 B1u 2005 1972 0.42      
9 B1u 956 940 3.87      
10 B2g 1874 1843 0.00      
11 B2g 898 883 0.00      
12 B2u 2718 2673 78.70      
13 B2u 844 830 1.68      
14 B2u 307 302 14.64      
15 B3g 986 970 0.00      
16 B3u 2602 2559 83.70      
17 B3u 1682 1654 282.48      
18 B3u 1153 1134 32.51      

Unscaled Zero Point Vibrational Energy (zpe) 13612.7 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 13389.5 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 LSDA/3-21G
ABC
2.62209 0.62084 0.56938

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.870 0.000 0.000
B2 -0.870 0.000 0.000
H3 0.000 0.000 0.993
H4 0.000 0.000 -0.993
H5 1.452 1.050 0.000
H6 1.452 -1.050 0.000
H7 -1.452 1.050 0.000
H8 -1.452 -1.050 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.74031.32031.32031.19991.19992.54802.5480
B21.74031.32031.32032.54802.54801.19991.1999
H31.32031.32031.98602.04812.04812.04812.0481
H41.32031.32031.98602.04812.04812.04812.0481
H51.19992.54802.04812.04812.09932.90313.5826
H61.19992.54802.04812.04812.09933.58262.9031
H72.54801.19992.04812.04812.90313.58262.0993
H82.54801.19992.04812.04813.58262.90312.0993

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 82.455 B1 H4 B2 82.455
H3 B1 H4 97.545 H3 B1 H5 108.623
H3 B1 H6 108.623 H3 B2 H4 97.545
H3 B2 H7 108.623 H3 B2 H8 108.623
H4 B1 H5 108.623 H4 B1 H6 108.623
H4 B2 H7 108.623 H4 B2 H8 108.623
H5 B1 H6 122.034 H7 B2 H8 122.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.401      
2 B -0.401      
3 H 0.159      
4 H 0.159      
5 H 0.121      
6 H 0.121      
7 H 0.121      
8 H 0.121      


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 -18.706 0.000 0.000
y 0.000 -17.796 0.000
z 0.000 0.000 -15.388
Traceless
 xyz
x -2.114 0.000 0.000
y 0.000 -0.749 0.000
z 0.000 0.000 2.863
Polar
3z2-r25.725
x2-y2-0.910
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.478 0.000 0.000
y 0.000 3.777 0.000
z 0.000 0.000 3.180


<r2> (average value of r2) Å2
<r2> 33.182
(<r2>)1/2 5.760