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

using model chemistry: LSDA/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 LSDA/6-31G**
 hartrees
Energy at 0K-51.681766
Energy at 298.15K-51.684633
HF Energy-51.681766
Nuclear repulsion energy24.759238
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/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 2789 2737 0.05      
2 A1 2119 2079 9.92      
3 A1 1358 1332 1.88      
4 A1 1079 1059 0.00      
5 A1 696 683 1.53      
6 A2 1302 1278 0.00      
7 A2 688 676 0.00      
8 B1 2135 2095 37.27      
9 B1 769 754 1.80      
10 B2 2750 2698 16.23      
11 B2 1334 1309 141.24      
12 B2 537 527 21.77      

Unscaled Zero Point Vibrational Energy (zpe) 8777.7 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 8613.5 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/6-31G**
ABC
6.69287 0.84199 0.81163

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.732 -0.120
B2 0.000 -0.732 -0.120
H3 0.900 0.000 0.565
H4 -0.900 0.000 0.565
H5 0.000 1.907 0.036
H6 0.000 -1.907 0.036

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46441.34761.34761.18552.6441
B21.46441.34761.34762.64411.1855
H31.34761.34761.80062.17432.1743
H41.34761.34761.80062.17432.1743
H51.18552.64412.17432.17433.8146
H62.64411.18552.17432.17433.8146

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 57.089 B1 B2 H4 57.089
B1 B2 H6 172.408 B1 H3 B2 65.821
B1 H4 B2 65.821 B2 B1 H3 57.089
B2 B1 H4 57.089 B2 B1 H5 172.408
H3 B1 H4 83.839 H3 B1 H5 118.125
H3 B2 H4 83.839 H3 B2 H6 118.125
H4 B1 H5 118.125 H4 B2 H6 118.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.146      
2 B -0.146      
3 H 0.098      
4 H 0.098      
5 H 0.048      
6 H 0.048      


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 1.175 1.175
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.503 0.000 0.000
y 0.000 -13.831 0.000
z 0.000 0.000 -16.004
Traceless
 xyz
x 1.414 0.000 0.000
y 0.000 0.923 0.000
z 0.000 0.000 -2.337
Polar
3z2-r2-4.674
x2-y20.327
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.297 0.000 0.000
y 0.000 5.704 0.000
z 0.000 0.000 2.793


<r2> (average value of r2) Å2
<r2> 24.066
(<r2>)1/2 4.906