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

using model chemistry: HF/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-7.622484
Energy at 298.15K-7.625078
HF Energy-7.622484
Nuclear repulsion energy11.711518
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/CEP-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 2650 2389 0.00      
2 A1 1289 1161 0.00      
3 A1 894 806 0.00      
4 B1 485 437 0.00      
5 B2 2616 2358 195.15      
6 B2 1211 1092 25.52      
7 E 2690 2424 227.71      
7 E 2690 2424 227.71      
8 E 1055 951 27.95      
8 E 1055 951 27.95      
9 E 501 452 3.74      
9 E 501 452 3.74      

Unscaled Zero Point Vibrational Energy (zpe) 8817.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 7948.4 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 HF/CEP-31G
ABC
3.98298 0.62514 0.62514

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.851
B2 0.000 0.000 -0.851
H3 0.000 1.025 1.486
H4 0.000 -1.025 1.486
H5 1.025 0.000 -1.486
H6 -1.025 0.000 -1.486

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.70221.20531.20532.55172.5517
B21.70222.55172.55171.20531.2053
H31.20532.55172.04933.30623.3062
H41.20532.55172.04933.30623.3062
H52.55171.20533.30623.30622.0493
H62.55171.20533.30623.30622.0493

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 121.778 B1 B2 H6 121.778
B2 B1 H3 121.778 B2 B1 H4 121.778
H3 B1 H4 116.443 H5 B2 H6 116.443
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.066      
2 B -0.066      
3 H 0.033      
4 H 0.033      
5 H 0.033      
6 H 0.033      


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 -14.141 0.000 0.000
y 0.000 -14.141 0.000
z 0.000 0.000 -16.988
Traceless
 xyz
x 1.423 0.000 0.000
y 0.000 1.423 0.000
z 0.000 0.000 -2.847
Polar
3z2-r2-5.694
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 2.368 0.000 0.000
y 0.000 2.368 0.000
z 0.000 0.000 4.376


<r2> (average value of r2) Å2
<r2> 26.802
(<r2>)1/2 5.177