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

using model chemistry: B2PLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-51.961923
Energy at 298.15K-51.964407
HF Energy-51.905975
Nuclear repulsion energy22.302449
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/6-31+G**
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 2623 2499 0.00      
2 A1 1236 1177 0.00      
3 A1 874 832 0.00      
4 B1 542 516 0.00      
5 B2 2602 2479 87.42      
6 B2 1172 1117 8.28      
7 E 2672 2545 104.21      
7 E 2672 2545 104.21      
8 E 1014 966 28.07      
8 E 1014 966 28.07      
9 E 423 403 4.56      
9 E 423 403 4.56      

Unscaled Zero Point Vibrational Energy (zpe) 8634.4 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 8223.4 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/6-31+G**
ABC
4.06625 0.66003 0.66003

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.823
B2 0.000 0.000 -0.823
H3 0.000 1.014 1.457
H4 0.000 -1.014 1.457
H5 1.014 0.000 -1.457
H6 -1.014 0.000 -1.457

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64581.19601.19602.49522.4952
B21.64582.49522.49521.19601.1960
H31.19602.49522.02823.24773.2477
H41.19602.49522.02823.24773.2477
H52.49521.19603.24773.24772.0282
H62.49521.19603.24773.24772.0282

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 122.015 B1 B2 H6 122.015
B2 B1 H3 122.015 B2 B1 H4 122.015
H3 B1 H4 115.971 H5 B2 H6 115.971
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.031      
2 B 0.031      
3 H -0.015      
4 H -0.015      
5 H -0.015      
6 H -0.015      


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 -14.705 0.000 0.000
y 0.000 -14.705 0.000
z 0.000 0.000 -16.971
Traceless
 xyz
x 1.133 0.000 0.000
y 0.000 1.133 0.000
z 0.000 0.000 -2.265
Polar
3z2-r2-4.530
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 3.475 0.000 0.000
y 0.000 3.475 0.000
z 0.000 0.000 5.576


<r2> (average value of r2) Å2
<r2> 29.033
(<r2>)1/2 5.388