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

using model chemistry: LSDA/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-51.685773
Energy at 298.15K-51.688659
HF Energy-51.685773
Nuclear repulsion energy24.791779
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(2df,p)
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 2794 2749 0.15      
2 A1 2112 2078 5.71      
3 A1 1349 1328 1.38      
4 A1 1074 1057 0.00      
5 A1 704 692 2.17      
6 A2 1304 1283 0.00      
7 A2 693 682 0.00      
8 B1 2122 2088 27.18      
9 B1 770 757 1.22      
10 B2 2751 2707 9.66      
11 B2 1344 1322 142.71      
12 B2 548 540 19.29      

Unscaled Zero Point Vibrational Energy (zpe) 8782.3 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 8641.8 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(2df,p)
ABC
6.70344 0.84409 0.81471

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.119
B2 0.000 -0.731 -0.119
H3 0.896 0.000 0.573
H4 -0.896 0.000 0.573
H5 0.000 1.905 0.022
H6 0.000 -1.905 0.022

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46141.34741.34741.18312.6398
B21.46141.34741.34742.63981.1831
H31.34741.34741.79162.17642.1764
H41.34741.34741.79162.17642.1764
H51.18312.63982.17642.17643.8108
H62.63981.18312.17642.17643.8108

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 57.158 B1 B2 H4 57.158
B1 B2 H6 173.153 B1 H3 B2 65.684
B1 H4 B2 65.684 B2 B1 H3 57.158
B2 B1 H4 57.158 B2 B1 H5 173.153
H3 B1 H4 83.344 H3 B1 H5 118.504
H3 B2 H4 83.344 H3 B2 H6 118.504
H4 B1 H5 118.504 H4 B2 H6 118.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.258      
2 B -0.258      
3 H 0.165      
4 H 0.165      
5 H 0.093      
6 H 0.093      


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 1.049 1.049
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.578 0.000 0.000
y 0.000 -13.784 0.000
z 0.000 0.000 -15.842
Traceless
 xyz
x 1.236 0.000 0.000
y 0.000 0.925 0.000
z 0.000 0.000 -2.161
Polar
3z2-r2-4.322
x2-y20.207
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.482 0.000 0.000
y 0.000 5.722 0.000
z 0.000 0.000 3.150


<r2> (average value of r2) Å2
<r2> 23.999
(<r2>)1/2 4.899