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

using model chemistry: B2PLYP/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 B2PLYP/6-311G*
 hartrees
Energy at 0K-51.959313
Energy at 298.15K-51.961769
HF Energy-51.907878
Nuclear repulsion energy22.322998
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 B2PLYP/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 2582 2582 0.00      
2 A1 1217 1217 0.00      
3 A1 867 867 0.00      
4 B1 547 547 0.00      
5 B2 2562 2562 71.52      
6 B2 1153 1153 5.82      
7 E 2631 2631 90.44      
7 E 2631 2631 90.44      
8 E 1001 1001 25.91      
8 E 1001 1001 25.91      
9 E 411 411 4.12      
9 E 411 411 4.12      

Unscaled Zero Point Vibrational Energy (zpe) 8506.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8506.7 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 B2PLYP/6-311G*
ABC
4.06051 0.66303 0.66303

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.820
B2 0.000 0.000 -0.820
H3 0.000 1.015 1.456
H4 0.000 -1.015 1.456
H5 1.015 0.000 -1.456
H6 -1.015 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63961.19801.19802.49222.4922
B21.63962.49222.49221.19801.1980
H31.19802.49222.02963.24733.2473
H41.19802.49222.02963.24733.2473
H52.49221.19803.24733.24732.0296
H62.49221.19803.24733.24732.0296

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 122.105 B1 B2 H6 122.105
B2 B1 H3 122.105 B2 B1 H4 122.105
H3 B1 H4 115.790 H5 B2 H6 115.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.157      
2 B -0.157      
3 H 0.078      
4 H 0.078      
5 H 0.078      
6 H 0.078      


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 -14.821 0.000 0.000
y 0.000 -14.821 0.000
z 0.000 0.000 -16.952
Traceless
 xyz
x 1.066 0.000 0.000
y 0.000 1.066 0.000
z 0.000 0.000 -2.132
Polar
3z2-r2-4.264
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 3.599 0.000 0.000
y 0.000 3.599 0.000
z 0.000 0.000 5.587


<r2> (average value of r2) Å2
<r2> 29.026
(<r2>)1/2 5.388