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

using model chemistry: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-51.375114
Energy at 298.15K-51.377883
HF Energy-51.375114
Nuclear repulsion energy24.619314
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 LSDA/3-21G
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 2829 2783 0.00      
2 A1 2029 1995 9.94      
3 A1 1365 1343 2.51      
4 A1 1065 1047 1.78      
5 A1 679 668 2.71      
6 A2 1199 1179 0.00      
7 A2 699 687 0.00      
8 B1 2021 1988 41.41      
9 B1 789 776 0.42      
10 B2 2780 2735 10.40      
11 B2 1213 1193 128.63      
12 B2 426 419 60.41      

Unscaled Zero Point Vibrational Energy (zpe) 8546.5 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 8406.4 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 LSDA/3-21G
ABC
6.46201 0.83917 0.80570

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.733 -0.115
B2 0.000 -0.733 -0.115
H3 0.924 0.000 0.576
H4 -0.924 0.000 0.576
H5 0.000 1.912 -0.003
H6 0.000 -1.912 -0.003

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46631.36721.36721.18372.6471
B21.46631.36721.36722.64711.1837
H31.36721.36721.84842.20102.2010
H41.36721.36721.84842.20102.2010
H51.18372.64712.20102.20103.8232
H62.64711.18372.20102.20103.8232

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 57.570 B1 B2 H4 57.570
B1 B2 H6 174.596 B1 H3 B2 64.859
B1 H4 B2 64.859 B2 B1 H3 57.570
B2 B1 H4 57.570 B2 B1 H5 174.596
H3 B1 H4 85.062 H3 B1 H5 119.096
H3 B2 H4 85.062 H3 B2 H6 119.096
H4 B1 H5 119.096 H4 B2 H6 119.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.179      
2 B -0.179      
3 H 0.129      
4 H 0.129      
5 H 0.050      
6 H 0.050      


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 1.370 1.370
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.134 0.000 0.000
y 0.000 -14.149 0.000
z 0.000 0.000 -16.965
Traceless
 xyz
x 1.424 0.000 0.000
y 0.000 1.401 0.000
z 0.000 0.000 -2.824
Polar
3z2-r2-5.648
x2-y20.015
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.266 0.000 0.000
y 0.000 5.631 0.000
z 0.000 0.000 2.623


<r2> (average value of r2) Å2
<r2> 24.608
(<r2>)1/2 4.961