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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: LSDA/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at LSDA/6-311G*
 hartrees
Energy at 0K-51.672047
Energy at 298.15K-51.674195
HF Energy-51.672047
Nuclear repulsion energy22.515163
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2498 2457 0.00      
2 A1 1129 1110 0.00      
3 A1 884 870 0.00      
4 B1 617 607 0.00      
5 B2 2476 2436 22.31      
6 B2 1033 1017 4.80      
7 E 2547 2505 40.95      
7 E 2547 2505 40.95      
8 E 916 901 17.85      
8 E 916 901 17.85      
9 E 277 273 0.01      
9 E 277 273 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 8058.6 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 7927.2 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 LSDA/6-311G*
ABC
4.03057 0.68724 0.68724

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.796
B2 0.000 0.000 -0.796
H3 0.000 1.019 1.450
H4 0.000 -1.019 1.450
H5 1.019 0.000 -1.450
H6 -1.019 0.000 -1.450

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.59261.21041.21042.46652.4665
B21.59262.46652.46651.21041.2104
H31.21042.46652.03713.23823.2382
H41.21042.46652.03713.23823.2382
H52.46651.21043.23823.23822.0371
H62.46651.21043.23823.23822.0371

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 122.697 B1 B2 H6 122.697
B2 B1 H3 122.697 B2 B1 H4 122.697
H3 B1 H4 114.607 H5 B2 H6 114.607
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.239      
2 B -0.239      
3 H 0.119      
4 H 0.119      
5 H 0.119      
6 H 0.119      


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 -14.847 0.000 0.000
y 0.000 -14.847 0.000
z 0.000 0.000 -16.176
Traceless
 xyz
x 0.665 0.000 0.000
y 0.000 0.665 0.000
z 0.000 0.000 -1.329
Polar
3z2-r2-2.658
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.835 0.000 0.000
y 0.000 3.835 0.000
z 0.000 0.000 6.556


<r2> (average value of r2) Å2
<r2> 28.452
(<r2>)1/2 5.334