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All results from a given calculation for H2Se2 (hydrogen diselenide)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-4800.306121
Energy at 298.15K 
HF Energy-4800.306121
Nuclear repulsion energy300.822348
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 BLYP/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 2326 2314 15.44 185.35 0.08 0.15
2 A 757 753 0.07 27.15 0.37 0.54
3 A 390 388 3.02 6.71 0.75 0.86
4 A 287 285 0.00 6.70 0.20 0.33
5 B 2330 2317 25.57 101.49 0.75 0.86
6 B 763 759 15.65 7.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3426.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3407.6 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 BLYP/6-31G(2df,p)
ABC
3.91340 0.07653 0.07653

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 1.158 -0.030
Se2 0.000 -1.158 -0.030
H3 1.040 1.356 1.013
H4 -1.040 -1.356 1.013

Atom - Atom Distances (Å)
  Se1 Se2 H3 H4
Se12.31621.48612.9140
Se22.31622.91401.4861
H31.48612.91403.4185
H42.91401.48613.4185

picture of hydrogen diselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 Se2 H4 97.662 Se2 Se1 H3 97.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.118      
2 Se -0.118      
3 H 0.118      
4 H 0.118      


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 0.690 0.690
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.468 1.425 0.000
y 1.425 -35.687 0.000
z 0.000 0.000 -37.479
Traceless
 xyz
x -0.885 1.425 0.000
y 1.425 1.787 0.000
z 0.000 0.000 -0.902
Polar
3z2-r2-1.804
x2-y2-1.782
xy1.425
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.253 0.494 0.000
y 0.494 10.139 0.000
z 0.000 0.000 6.216


<r2> (average value of r2) Å2
<r2> 122.193
(<r2>)1/2 11.054