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

using model chemistry: B3LYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYP/3-21G*
 hartrees
Energy at 0K-51.752640
Energy at 298.15K-51.755130
HF Energy-51.752640
Nuclear repulsion energy22.354440
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 B3LYP/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 2606 2507 0.00      
2 A1 1211 1165 0.00      
3 A1 896 862 0.00      
4 B1 575 553 0.00      
5 B2 2585 2486 48.99      
6 B2 1159 1115 0.91      
7 E 2652 2552 58.36      
7 E 2652 2552 58.36      
8 E 990 953 29.41      
8 E 990 953 29.41      
9 E 420 404 0.35      
9 E 420 404 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 8577.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 8251.5 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 B3LYP/3-21G*
ABC
4.05189 0.66785 0.66785

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.815
B2 0.000 0.000 -0.815
H3 0.000 1.016 1.456
H4 0.000 -1.016 1.456
H5 1.016 0.000 -1.456
H6 -1.016 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62921.20171.20172.48792.4879
B21.62922.48792.48791.20171.2017
H31.20172.48792.03183.24793.2479
H41.20172.48792.03183.24793.2479
H52.48791.20173.24793.24792.0318
H62.48791.20173.24793.24792.0318

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 122.285 B1 B2 H6 122.285
B2 B1 H3 122.285 B2 B1 H4 122.285
H3 B1 H4 115.430 H5 B2 H6 115.430
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.069      
2 B -0.069      
3 H 0.035      
4 H 0.035      
5 H 0.035      
6 H 0.035      


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 -14.759 0.000 0.000
y 0.000 -14.759 0.000
z 0.000 0.000 -16.259
Traceless
 xyz
x 0.750 0.000 0.000
y 0.000 0.750 0.000
z 0.000 0.000 -1.500
Polar
3z2-r2-3.000
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 3.072 0.000 0.000
y 0.000 3.072 0.000
z 0.000 0.000 5.203


<r2> (average value of r2) Å2
<r2> 28.779
(<r2>)1/2 5.365