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

using model chemistry: B2PLYP/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B2PLYP/aug-cc-pCVTZ
 hartrees
Energy at 0K-51.987557
Energy at 298.15K 
HF Energy-51.919249
Nuclear repulsion energy22.393034
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 B2PLYP/aug-cc-pCVTZ
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 2597 2597 0.00      
2 A1 1219 1219 0.00      
3 A1 867 867 0.00      
4 B1 550 550 0.00      
5 B2 2578 2578 68.98      
6 B2 1158 1158 5.93      
7 E 2645 2645 86.58      
7 E 2645 2645 86.58      
8 E 1005 1005 26.61      
8 E 1005 1005 26.61      
9 E 405 405 5.22      
9 E 405 405 5.22      

Unscaled Zero Point Vibrational Energy (zpe) 8539.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8539.1 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 B2PLYP/aug-cc-pCVTZ
ABC
4.07781 0.66711 0.66711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pCVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.818
B2 0.000 0.000 -0.818
H3 0.000 1.013 1.450
H4 0.000 -1.013 1.450
H5 1.013 0.000 -1.450
H6 -1.013 0.000 -1.450

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63581.19361.19362.48352.4835
B21.63582.48352.48351.19361.1936
H31.19362.48352.02533.23383.2338
H41.19362.48352.02533.23383.2338
H52.48351.19363.23383.23382.0253
H62.48351.19363.23383.23382.0253

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 121.961 B1 B2 H6 121.961
B2 B1 H3 121.961 B2 B1 H4 121.961
H3 B1 H4 116.079 H5 B2 H6 116.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.020      
2 B 0.020      
3 H -0.010      
4 H -0.010      
5 H -0.010      
6 H -0.010      


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 -14.714 0.000 0.000
y 0.000 -14.714 0.000
z 0.000 0.000 -16.829
Traceless
 xyz
x 1.058 0.000 0.000
y 0.000 1.058 0.000
z 0.000 0.000 -2.116
Polar
3z2-r2-4.231
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 4.133 0.000 -0.000
y 0.000 4.133 0.000
z -0.000 0.000 5.796


<r2> (average value of r2) Å2
<r2> 28.829
(<r2>)1/2 5.369