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

using model chemistry: B2PLYP/TZVP

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/TZVP
 hartrees
Energy at 0K-51.975610
Energy at 298.15K-51.978082
HF Energy-51.917003
Nuclear repulsion energy22.366428
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/TZVP
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 2605 2486 0.00      
2 A1 1226 1170 0.00      
3 A1 871 831 0.00      
4 B1 548 523 0.00      
5 B2 2585 2467 71.60      
6 B2 1165 1112 5.94      
7 E 2655 2533 87.43      
7 E 2655 2533 87.43      
8 E 1008 962 27.92      
8 E 1008 962 27.92      
9 E 412 393 4.37      
9 E 412 393 4.37      

Unscaled Zero Point Vibrational Energy (zpe) 8574.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 8183.3 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/TZVP
ABC
4.07000 0.66551 0.66551

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/TZVP

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.819
B2 0.000 0.000 -0.819
H3 0.000 1.014 1.452
H4 0.000 -1.014 1.452
H5 1.014 0.000 -1.452
H6 -1.014 0.000 -1.452

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63761.19511.19512.48662.4866
B21.63762.48662.48661.19511.1951
H31.19512.48662.02733.23833.2383
H41.19512.48662.02733.23833.2383
H52.48661.19513.23833.23832.0273
H62.48661.19513.23833.23832.0273

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 121.987 B1 B2 H6 121.987
B2 B1 H3 121.987 B2 B1 H4 121.987
H3 B1 H4 116.026 H5 B2 H6 116.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.039      
2 B 0.039      
3 H -0.020      
4 H -0.020      
5 H -0.020      
6 H -0.020      


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 -14.717 0.000 0.000
y 0.000 -14.717 0.000
z 0.000 0.000 -16.944
Traceless
 xyz
x 1.114 0.000 0.000
y 0.000 1.114 0.000
z 0.000 0.000 -2.227
Polar
3z2-r2-4.454
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 3.524 0.000 0.000
y 0.000 3.524 0.000
z 0.000 0.000 5.596


<r2> (average value of r2) Å2
<r2> 28.901
(<r2>)1/2 5.376