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

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-51.943379
Energy at 298.15K-51.945675
HF Energy-51.943379
Nuclear repulsion energy22.372959
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 PBEPBE/Def2TZVPP
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 2511 2480 0.00      
2 A1 1143 1129 0.00      
3 A1 871 860 0.00      
4 B1 592 584 0.00      
5 B2 2491 2461 42.11      
6 B2 1071 1059 0.24      
7 E 2556 2525 59.40      
7 E 2556 2525 59.40      
8 E 950 939 20.44      
8 E 950 939 20.44      
9 E 336 332 1.13      
9 E 336 332 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 8180.7 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 8081.7 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 PBEPBE/Def2TZVPP
ABC
4.02931 0.67259 0.67259

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.809
B2 0.000 0.000 -0.809
H3 0.000 1.019 1.457
H4 0.000 -1.019 1.457
H5 1.019 0.000 -1.457
H6 -1.019 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.61841.20711.20712.48442.4844
B21.61842.48442.48441.20711.2071
H31.20712.48442.03753.25023.2502
H41.20712.48442.03753.25023.2502
H52.48441.20713.25023.25022.0375
H62.48441.20713.25023.25022.0375

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 122.441 B1 B2 H6 122.441
B2 B1 H3 122.441 B2 B1 H4 122.441
H3 B1 H4 115.118 H5 B2 H6 115.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.055      
2 B -0.055      
3 H 0.028      
4 H 0.028      
5 H 0.028      
6 H 0.028      


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 -14.740 0.000 0.000
y 0.000 -14.740 0.000
z 0.000 0.000 -16.441
Traceless
 xyz
x 0.850 0.000 0.000
y 0.000 0.850 0.000
z 0.000 0.000 -1.701
Polar
3z2-r2-3.401
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 4.059 0.000 0.000
y 0.000 4.059 0.000
z 0.000 0.000 6.532


<r2> (average value of r2) Å2
<r2> 28.748
(<r2>)1/2 5.362