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

using model chemistry: PBE1PBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBE1PBE/6-311G**
 hartrees
Energy at 0K-4803.673024
Energy at 298.15K 
HF Energy-4803.673024
Nuclear repulsion energy298.862113
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 PBE1PBE/6-311G**
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 2409 2311 11.16 208.66 0.09 0.16
2 A 755 725 0.04 30.31 0.48 0.65
3 A 379 363 7.10 19.62 0.75 0.86
4 A 299 287 0.01 10.72 0.25 0.40
5 B 2410 2312 15.02 142.84 0.75 0.86
6 B 752 721 12.55 11.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3501.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3359.6 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 PBE1PBE/6-311G**
ABC
3.96021 0.07533 0.07532

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 1.168 -0.029
Se2 0.000 -1.168 -0.029
H3 1.039 1.333 1.002
H4 -1.039 -1.333 1.002

Atom - Atom Distances (Å)
  Se1 Se2 H3 H4
Se12.33611.47312.8983
Se22.33612.89831.4731
H31.47312.89833.3809
H42.89831.47313.3809

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 96.446 Se2 Se1 H3 96.446
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.089      
2 Se -0.089      
3 H 0.089      
4 H 0.089      


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 1.013 1.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.804 1.906 0.000
y 1.906 -35.750 0.000
z 0.000 0.000 -37.931
Traceless
 xyz
x -0.963 1.906 0.000
y 1.906 2.118 0.000
z 0.000 0.000 -1.155
Polar
3z2-r2-2.309
x2-y2-2.054
xy1.906
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.326 0.464 0.000
y 0.464 9.722 0.000
z 0.000 0.000 5.282


<r2> (average value of r2) Å2
<r2> 123.764
(<r2>)1/2 11.125