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

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-51.650369
Energy at 298.15K-51.652958
HF Energy-51.650369
Nuclear repulsion energy22.172764
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/6-311+G(3df,2p)
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 2652 2410 0.00      
2 A1 1308 1188 0.00      
3 A1 861 783 0.00      
4 B1 490 445 0.00      
5 B2 2627 2387 124.46      
6 B2 1251 1137 28.89      
7 E 2692 2446 141.60      
7 E 2692 2446 141.60      
8 E 1066 969 32.35      
8 E 1066 969 32.35      
9 E 487 442 12.17      
9 E 487 442 12.17      

Unscaled Zero Point Vibrational Energy (zpe) 8839.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 8031.9 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 HF/6-311+G(3df,2p)
ABC
4.06128 0.64648 0.64648

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.836
B2 0.000 0.000 -0.836
H3 0.000 1.015 1.462
H4 0.000 -1.015 1.462
H5 1.015 0.000 -1.462
H6 -1.015 0.000 -1.462

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67141.19271.19272.51222.5122
B21.67142.51222.51221.19271.1927
H31.19272.51222.02943.25803.2580
H41.19272.51222.02943.25803.2580
H52.51221.19273.25803.25802.0294
H62.51221.19273.25803.25802.0294

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 121.703 B1 B2 H6 121.703
B2 B1 H3 121.703 B2 B1 H4 121.703
H3 B1 H4 116.593 H5 B2 H6 116.593
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.224      
2 B -0.224      
3 H 0.112      
4 H 0.112      
5 H 0.112      
6 H 0.112      


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 -14.769 0.000 0.000
y 0.000 -14.769 0.000
z 0.000 0.000 -17.277
Traceless
 xyz
x 1.254 0.000 0.000
y 0.000 1.254 0.000
z 0.000 0.000 -2.508
Polar
3z2-r2-5.016
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 3.932 0.000 0.000
y 0.000 3.932 0.000
z 0.000 0.000 5.112


<r2> (average value of r2) Å2
<r2> 29.405
(<r2>)1/2 5.423