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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-52.019842
Energy at 298.15K-52.022239
HF Energy-52.019842
Nuclear repulsion energy22.345332
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 B3PW91/6-311G*
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 2554 2458 0.00      
2 A1 1188 1143 0.00      
3 A1 869 837 0.00      
4 B1 564 543 0.00      
5 B2 2531 2437 64.26      
6 B2 1119 1078 1.72      
7 E 2602 2505 82.33      
7 E 2602 2505 82.33      
8 E 975 939 25.06      
8 E 975 939 25.06      
9 E 383 369 2.24      
9 E 383 369 2.24      

Unscaled Zero Point Vibrational Energy (zpe) 8373.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 8060.9 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 B3PW91/6-311G*
ABC
4.04644 0.66744 0.66744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.815
B2 0.000 0.000 -0.815
H3 0.000 1.017 1.457
H4 0.000 -1.017 1.457
H5 1.017 0.000 -1.457
H6 -1.017 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62961.20231.20232.48872.4887
B21.62962.48872.48871.20231.2023
H31.20232.48872.03323.24903.2490
H41.20232.48872.03323.24903.2490
H52.48871.20233.24903.24902.0332
H62.48871.20233.24903.24902.0332

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 122.273 B1 B2 H6 122.273
B2 B1 H3 122.273 B2 B1 H4 122.273
H3 B1 H4 115.453 H5 B2 H6 115.453
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.177      
2 B -0.177      
3 H 0.089      
4 H 0.089      
5 H 0.089      
6 H 0.089      


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 -14.644 0.000 0.000
y 0.000 -14.644 0.000
z 0.000 0.000 -16.532
Traceless
 xyz
x 0.944 0.000 0.000
y 0.000 0.944 0.000
z 0.000 0.000 -1.888
Polar
3z2-r2-3.776
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 3.661 0.000 0.000
y 0.000 3.661 0.000
z 0.000 0.000 5.854


<r2> (average value of r2) Å2
<r2> 28.802
(<r2>)1/2 5.367