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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HF/SDD
 hartrees
Energy at 0K-51.615679
Energy at 298.15K-51.618292
HF Energy-51.615679
Nuclear repulsion energy22.139703
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 HF/SDD
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 2676 2409 0.00      
2 A1 1270 1144 0.00      
3 A1 890 802 0.00      
4 B1 517 466 0.00      
5 B2 2643 2380 157.52      
6 B2 1217 1096 10.53      
7 E 2735 2463 173.27      
7 E 2735 2463 173.27      
8 E 1067 960 28.75      
8 E 1067 960 28.75      
9 E 498 448 1.57      
9 E 498 448 1.57      

Unscaled Zero Point Vibrational Energy (zpe) 8906.5 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 8019.5 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 HF/SDD
ABC
4.04878 0.64478 0.64478

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.837
B2 0.000 0.000 -0.837
H3 0.000 1.016 1.465
H4 0.000 -1.016 1.465
H5 1.016 0.000 -1.465
H6 -1.016 0.000 -1.465

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67321.19491.19492.51602.5160
B21.67322.51602.51601.19491.1949
H31.19492.51602.03263.26363.2636
H41.19492.51602.03263.26363.2636
H52.51601.19493.26363.26362.0326
H62.51601.19493.26363.26362.0326

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.733 B1 B2 H6 121.733
B2 B1 H3 121.733 B2 B1 H4 121.733
H3 B1 H4 116.534 H5 B2 H6 116.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.075      
2 B -0.075      
3 H 0.038      
4 H 0.038      
5 H 0.038      
6 H 0.038      


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 -14.686 0.000 0.000
y 0.000 -14.686 0.000
z 0.000 0.000 -16.800
Traceless
 xyz
x 1.057 0.000 0.000
y 0.000 1.057 0.000
z 0.000 0.000 -2.115
Polar
3z2-r2-4.229
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 2.690 0.000 0.000
y 0.000 2.690 0.000
z 0.000 0.000 4.048


<r2> (average value of r2) Å2
<r2> 29.328
(<r2>)1/2 5.416