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

using model chemistry: B2PLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B2PLYP/6-31G
 hartrees
Energy at 0K-51.920992
Energy at 298.15K-51.923534
HF Energy-51.886485
Nuclear repulsion energy22.270475
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/6-31G
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 2609 2609 0.00      
2 A1 1239 1239 0.00      
3 A1 888 888 0.00      
4 B1 554 554 0.00      
5 B2 2586 2586 82.58      
6 B2 1187 1187 6.14      
7 E 2659 2659 96.41      
7 E 2659 2659 96.41      
8 E 1017 1017 30.35      
8 E 1017 1017 30.35      
9 E 449 449 2.96      
9 E 449 449 2.96      

Unscaled Zero Point Vibrational Energy (zpe) 8656.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8656.1 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/6-31G
ABC
4.05052 0.65929 0.65929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.822
B2 0.000 0.000 -0.822
H3 0.000 1.016 1.461
H4 0.000 -1.016 1.461
H5 1.016 0.000 -1.461
H6 -1.016 0.000 -1.461

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64451.20001.20002.49892.4989
B21.64452.49892.49891.20001.2000
H31.20002.49892.03213.25573.2557
H41.20002.49892.03213.25573.2557
H52.49891.20003.25573.25572.0321
H62.49891.20003.25573.25572.0321

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 122.144 B1 B2 H6 122.144
B2 B1 H3 122.144 B2 B1 H4 122.144
H3 B1 H4 115.712 H5 B2 H6 115.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.072      
2 B 0.072      
3 H -0.036      
4 H -0.036      
5 H -0.036      
6 H -0.036      


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 -14.445 0.000 0.000
y 0.000 -14.445 0.000
z 0.000 0.000 -16.562
Traceless
 xyz
x 1.059 0.000 0.000
y 0.000 1.059 0.000
z 0.000 0.000 -2.117
Polar
3z2-r2-4.234
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 3.105 0.000 0.000
y 0.000 3.105 0.000
z 0.000 0.000 5.016


<r2> (average value of r2) Å2
<r2> 28.888
(<r2>)1/2 5.375