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

using model chemistry: mPW1PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/STO-3G
 hartrees
Energy at 0K-51.355656
Energy at 298.15K-51.358052
HF Energy-51.355656
Nuclear repulsion energy24.960554
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 mPW1PW91/STO-3G
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 3236 2844 0.25      
2 A1 2368 2081 4.87      
3 A1 1547 1360 9.43      
4 A1 1409 1239 2.83      
5 A1 836 735 7.19      
6 A2 1227 1079 0.00      
7 A2 318 279 0.00      
8 B1 2394 2104 18.54      
9 B1 889 781 18.55      
10 B2 3180 2795 18.77      
11 B2 1286 1130 155.46      
12 B2 378 332 152.12      

Unscaled Zero Point Vibrational Energy (zpe) 9533.4 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 8378.9 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 mPW1PW91/STO-3G
ABC
6.37090 0.86737 0.84020

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.718 -0.116
B2 0.000 -0.718 -0.116
H3 0.901 0.000 0.623
H4 -0.901 0.000 0.623
H5 0.000 1.873 -0.045
H6 0.000 -1.873 -0.045

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.43611.36901.36901.15732.5923
B21.43611.36901.36902.59231.1573
H31.36901.36901.80252.18372.1837
H41.36901.36901.80252.18372.1837
H51.15732.59232.18372.18373.7465
H62.59231.15732.18372.18373.7465

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 58.363 B1 B2 H4 58.363
B1 B2 H6 176.513 B1 H3 B2 63.273
B1 H4 B2 63.273 B2 B1 H3 58.363
B2 B1 H4 58.363 B2 B1 H5 176.513
H3 B1 H4 82.346 H3 B1 H5 119.388
H3 B2 H4 82.346 H3 B2 H6 119.388
H4 B1 H5 119.388 H4 B2 H6 119.388
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.026      
2 B -0.026      
3 H 0.032      
4 H 0.032      
5 H -0.006      
6 H -0.006      


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 1.162 1.162
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.719 0.000 0.000
y 0.000 -13.584 0.000
z 0.000 0.000 -13.875
Traceless
 xyz
x 1.010 0.000 0.000
y 0.000 -0.287 0.000
z 0.000 0.000 -0.723
Polar
3z2-r2-1.447
x2-y20.865
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.407 0.000 0.000
y 0.000 3.134 0.000
z 0.000 0.000 1.034


<r2> (average value of r2) Å2
<r2> 23.079
(<r2>)1/2 4.804