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

using model chemistry: B3PW91/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3PW91/aug-cc-pCVTZ
 hartrees
Energy at 0K-52.031161
Energy at 298.15K 
HF Energy-52.031161
Nuclear repulsion energy22.396957
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 B3PW91/aug-cc-pCVTZ
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 2564 2564 0.00      
2 A1 1186 1186 0.00      
3 A1 868 868 0.00      
4 B1 570 570 0.00      
5 B2 2543 2543 57.12      
6 B2 1121 1121 1.21      
7 E 2611 2611 73.65      
7 E 2611 2611 73.65      
8 E 980 980 24.10      
8 E 980 980 24.10      
9 E 379 379 2.83      
9 E 379 379 2.83      

Unscaled Zero Point Vibrational Energy (zpe) 8396.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8396.0 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 B3PW91/aug-cc-pCVTZ
ABC
4.05798 0.67051 0.67051

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pCVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.813
B2 0.000 0.000 -0.813
H3 0.000 1.015 1.452
H4 0.000 -1.015 1.452
H5 1.015 0.000 -1.452
H6 -1.015 0.000 -1.452

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62691.19911.19912.48212.4821
B21.62692.48212.48211.19911.1991
H31.19912.48212.03033.23883.2388
H41.19912.48212.03033.23883.2388
H52.48211.19913.23883.23882.0303
H62.48211.19913.23883.23882.0303

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 122.156 B1 B2 H6 122.156
B2 B1 H3 122.156 B2 B1 H4 122.156
H3 B1 H4 115.688 H5 B2 H6 115.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.097      
2 B -0.097      
3 H 0.048      
4 H 0.048      
5 H 0.048      
6 H 0.048      


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 -14.564 0.000 0.000
y 0.000 -14.564 0.000
z 0.000 0.000 -16.449
Traceless
 xyz
x 0.943 0.000 0.000
y 0.000 0.943 0.000
z 0.000 0.000 -1.885
Polar
3z2-r2-3.771
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 4.204 0.000 0.000
y 0.000 4.204 0.000
z 0.000 0.000 6.086


<r2> (average value of r2) Å2
<r2> 28.657
(<r2>)1/2 5.353