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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: mPW1PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-50.751337
Energy at 298.15K-50.751366
HF Energy-50.751337
Nuclear repulsion energy15.249000
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-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2830 2712 0.00      
2 Σg 1273 1220 0.00      
3 Σu 2787 2671 26.98      
4 Πg 569 545 0.00      
4 Πg 569 545 0.00      
5 Πu 607 582 0.93      
5 Πu 607 582 0.93      

Unscaled Zero Point Vibrational Energy (zpe) 4621.0 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 4428.3 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-pVDZ
B
0.82747

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.760
B2 0.000 0.000 -0.760
H3 0.000 0.000 1.947
H4 0.000 0.000 -1.947

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.52081.18662.7074
B21.52082.70741.1866
H31.18662.70743.8940
H42.70741.18663.8940

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.029      
2 B -0.029      
3 H 0.029      
4 H 0.029      


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 -14.014 0.000 0.000
y 0.000 -14.014 0.000
z 0.000 0.000 -12.124
Traceless
 xyz
x -0.945 0.000 0.000
y 0.000 -0.945 0.000
z 0.000 0.000 1.890
Polar
3z2-r23.780
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 2.683 0.000 0.000
y 0.000 2.683 0.000
z 0.000 0.000 7.073


<r2> (average value of r2) Å2
<r2> 21.723
(<r2>)1/2 4.661