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All results from a given calculation for HBHHBH (Diborane(4) C2V)

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 C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-52.019273
Energy at 298.15K-52.022158
HF Energy-52.019273
Nuclear repulsion energy24.750607
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 2814 2709 0.04      
2 A1 2089 2011 21.89      
3 A1 1363 1312 3.07      
4 A1 1158 1114 3.70      
5 A1 728 700 3.22      
6 A2 1231 1185 0.00      
7 A2 649 625 0.00      
8 B1 2096 2018 53.44      
9 B1 791 761 1.89      
10 B2 2771 2668 39.90      
11 B2 1305 1256 192.82      
12 B2 551 530 40.13      

Unscaled Zero Point Vibrational Energy (zpe) 8772.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 8445.1 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
6.56564 0.84398 0.81518

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.119
B2 0.000 -0.731 -0.119
H3 0.901 0.000 0.588
H4 -0.901 0.000 0.588
H5 0.000 1.900 0.008
H6 0.000 -1.900 0.008

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46191.35861.35861.17622.6343
B21.46191.35861.35862.63431.1762
H31.35861.35861.80222.18132.1813
H41.35861.35861.80222.18132.1813
H51.17622.63432.18132.18133.8005
H62.63431.17622.18132.18133.8005

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.450 B1 B2 H4 57.450
B1 B2 H6 173.772 B1 H3 B2 65.101
B1 H4 B2 65.101 B2 B1 H3 57.450
B2 B1 H4 57.450 B2 B1 H5 173.772
H3 B1 H4 83.099 H3 B1 H5 118.583
H3 B2 H4 83.099 H3 B2 H6 118.583
H4 B1 H5 118.583 H4 B2 H6 118.583
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 -0.255      
2 B -0.255      
3 H 0.215      
4 H 0.215      
5 H 0.039      
6 H 0.039      


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 1.002 1.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.026 0.000 0.000
y 0.000 -14.102 0.000
z 0.000 0.000 -16.612
Traceless
 xyz
x 1.331 0.000 0.000
y 0.000 1.217 0.000
z 0.000 0.000 -2.548
Polar
3z2-r2-5.096
x2-y20.076
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.801 0.000 0.000
y 0.000 5.963 0.000
z 0.000 0.000 3.520


<r2> (average value of r2) Å2
<r2> 24.336
(<r2>)1/2 4.933