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

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-51.681909
Energy at 298.15K-51.684708
HF Energy-51.681909
Nuclear repulsion energy24.694199
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 B1B95/3-21G*
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 2905 2774 0.12      
2 A1 2055 1963 22.41      
3 A1 1376 1314 3.79      
4 A1 1135 1084 13.18      
5 A1 722 690 1.37      
6 A2 1234 1178 0.00      
7 A2 669 639 0.00      
8 B1 2040 1948 74.58      
9 B1 832 794 0.92      
10 B2 2859 2730 31.93      
11 B2 1269 1212 181.63      
12 B2 426 407 80.83      

Unscaled Zero Point Vibrational Energy (zpe) 8761.0 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 8365.9 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 B1B95/3-21G*
ABC
6.51301 0.84157 0.81001

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.733 -0.113
B2 0.000 -0.733 -0.113
H3 0.914 0.000 0.585
H4 -0.914 0.000 0.585
H5 0.000 1.901 -0.018
H6 0.000 -1.901 -0.018

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46681.36441.36441.17142.6361
B21.46681.36441.36442.63611.1714
H31.36441.36441.82832.19372.1937
H41.36441.36441.82832.19372.1937
H51.17142.63612.19372.19373.8018
H62.63611.17142.19372.19373.8018

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 57.485 B1 B2 H4 57.485
B1 B2 H6 175.308 B1 H3 B2 65.031
B1 H4 B2 65.031 B2 B1 H3 57.485
B2 B1 H4 57.485 B2 B1 H5 175.308
H3 B1 H4 84.131 H3 B1 H5 119.594
H3 B2 H4 84.131 H3 B2 H6 119.594
H4 B1 H5 119.594 H4 B2 H6 119.594
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.104      
2 B -0.104      
3 H 0.083      
4 H 0.083      
5 H 0.021      
6 H 0.021      


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 1.182 1.182
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.239 0.000 0.000
y 0.000 -14.269 0.000
z 0.000 0.000 -16.798
Traceless
 xyz
x 1.294 0.000 0.000
y 0.000 1.250 0.000
z 0.000 0.000 -2.544
Polar
3z2-r2-5.089
x2-y20.030
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.178 0.000 0.000
y 0.000 5.520 0.000
z 0.000 0.000 2.587


<r2> (average value of r2) Å2
<r2> 24.524
(<r2>)1/2 4.952