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

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 D2D 1A1
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-51.373483
Energy at 298.15K-51.375771
HF Energy-51.373483
Nuclear repulsion energy22.439842
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 A1 2536 2495 0.00      
2 A1 1147 1128 0.00      
3 A1 914 899 0.00      
4 B1 623 613 0.00      
5 B2 2513 2472 14.20      
6 B2 1071 1054 6.56      
7 E 2589 2547 24.48      
7 E 2589 2547 24.48      
8 E 924 908 20.32      
8 E 924 908 20.32      
9 E 326 320 1.10      
9 E 326 320 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 8240.0 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 8104.9 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
4.00482 0.68247 0.68247

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.799
B2 0.000 0.000 -0.799
H3 0.000 1.022 1.455
H4 0.000 -1.022 1.455
H5 1.022 0.000 -1.455
H6 -1.022 0.000 -1.455

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.59841.21411.21412.47482.4748
B21.59842.47482.47481.21411.2141
H31.21412.47482.04373.24873.2487
H41.21412.47482.04373.24873.2487
H52.47481.21413.24873.24872.0437
H62.47481.21413.24873.24872.0437

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 122.683 B1 B2 H6 122.683
B2 B1 H3 122.683 B2 B1 H4 122.683
H3 B1 H4 114.634 H5 B2 H6 114.634
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 -0.164      
2 B -0.164      
3 H 0.082      
4 H 0.082      
5 H 0.082      
6 H 0.082      


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 -14.796 0.000 0.000
y 0.000 -14.796 0.000
z 0.000 0.000 -15.637
Traceless
 xyz
x 0.421 0.000 0.000
y 0.000 0.421 0.000
z 0.000 0.000 -0.841
Polar
3z2-r2-1.682
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 3.207 0.000 0.000
y 0.000 3.207 0.000
z 0.000 0.000 5.843


<r2> (average value of r2) Å2
<r2> 28.446
(<r2>)1/2 5.333