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

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-51.987936
Energy at 298.15K-51.990734
HF Energy-51.987936
Nuclear repulsion energy24.642113
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 BLYP/6-31G**
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 2794 2773 0.06      
2 A1 2035 2019 26.75      
3 A1 1343 1333 2.74      
4 A1 1117 1108 3.83      
5 A1 722 716 0.61      
6 A2 1198 1189 0.00      
7 A2 606 602 0.00      
8 B1 2042 2026 81.19      
9 B1 794 788 2.32      
10 B2 2757 2736 34.58      
11 B2 1282 1273 162.97      
12 B2 485 481 36.38      

Unscaled Zero Point Vibrational Energy (zpe) 8587.8 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 8521.6 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 BLYP/6-31G**
ABC
6.55847 0.83468 0.80567

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.736 -0.119
B2 0.000 -0.736 -0.119
H3 0.904 0.000 0.583
H4 -0.904 0.000 0.583
H5 0.000 1.908 0.014
H6 0.000 -1.908 0.014

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.47251.36141.36141.17952.6478
B21.47251.36141.36142.64781.1795
H31.36141.36141.80892.18702.1870
H41.36141.36141.80892.18702.1870
H51.17952.64782.18702.18703.8164
H62.64781.17952.18702.18703.8164

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 57.263 B1 B2 H4 57.263
B1 B2 H6 173.503 B1 H3 B2 65.475
B1 H4 B2 65.475 B2 B1 H3 57.263
B2 B1 H4 57.263 B2 B1 H5 173.503
H3 B1 H4 83.261 H3 B1 H5 118.616
H3 B2 H4 83.261 H3 B2 H6 118.616
H4 B1 H5 118.616 H4 B2 H6 118.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.056      
2 B -0.056      
3 H 0.048      
4 H 0.048      
5 H 0.008      
6 H 0.008      


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 1.019 1.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.540 0.000 0.000
y 0.000 -14.011 0.000
z 0.000 0.000 -15.823
Traceless
 xyz
x 1.377 0.000 0.000
y 0.000 0.670 0.000
z 0.000 0.000 -2.047
Polar
3z2-r2-4.094
x2-y20.472
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.284 0.000 0.000
y 0.000 5.593 0.000
z 0.000 0.000 2.796


<r2> (average value of r2) Å2
<r2> 24.192
(<r2>)1/2 4.919