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

using model chemistry: mPW1PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-52.035315
Energy at 298.15K-52.038246
HF Energy-52.035315
Nuclear repulsion energy24.868516
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/cc-pVTZ
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 2835 2719 0.03      
2 A1 2123 2037 14.27      
3 A1 1366 1311 2.55      
4 A1 1118 1072 1.60      
5 A1 734 704 4.18      
6 A2 1292 1239 0.00      
7 A2 680 653 0.00      
8 B1 2129 2042 41.08      
9 B1 794 762 1.29      
10 B2 2794 2680 32.16      
11 B2 1363 1308 188.52      
12 B2 569 546 30.68      

Unscaled Zero Point Vibrational Energy (zpe) 8899.2 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 8536.1 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 mPW1PW91/cc-pVTZ
ABC
6.72141 0.85007 0.81934

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.729 -0.115
B2 0.000 -0.729 -0.115
H3 0.898 0.000 0.573
H4 -0.898 0.000 0.573
H5 0.000 1.896 0.003
H6 0.000 -1.896 0.003

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.45811.34621.34621.17292.6276
B21.45811.34621.34622.62761.1729
H31.34621.34621.79632.17392.1739
H41.34621.34621.79632.17392.1739
H51.17292.62762.17392.17393.7918
H62.62761.17292.17392.17393.7918

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 57.209 B1 B2 H4 57.209
B1 B2 H6 174.202 B1 H3 B2 65.583
B1 H4 B2 65.583 B2 B1 H3 57.209
B2 B1 H4 57.209 B2 B1 H5 174.202
H3 B1 H4 83.699 H3 B1 H5 119.153
H3 B2 H4 83.699 H3 B2 H6 119.153
H4 B1 H5 119.153 H4 B2 H6 119.153
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.192      
2 B -0.192      
3 H 0.155      
4 H 0.155      
5 H 0.037      
6 H 0.037      


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 0.887 0.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.933 0.000 0.000
y 0.000 -14.021 0.000
z 0.000 0.000 -16.480
Traceless
 xyz
x 1.317 0.000 0.000
y 0.000 1.186 0.000
z 0.000 0.000 -2.503
Polar
3z2-r2-5.007
x2-y20.088
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.998 0.000 0.000
y 0.000 5.988 0.000
z 0.000 0.000 3.965


<r2> (average value of r2) Å2
<r2> 24.159
(<r2>)1/2 4.915