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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-4799.304232
Energy at 298.15K 
HF Energy-4799.304232
Nuclear repulsion energy300.758300
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 HSEh1PBE/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 A 2438 2328 12.98 189.76 0.10 0.18
2 A 766 731 0.00 26.31 0.44 0.61
3 A 386 368 8.01 0.79 0.74 0.85
4 A 311 297 0.02 10.73 0.20 0.34
5 B 2440 2330 18.32 130.99 0.75 0.86
6 B 767 733 14.98 7.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3554.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 3393.4 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 HSEh1PBE/6-31+G**
ABC
4.01260 0.07628 0.07628

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 1.161 -0.029
Se2 0.000 -1.161 -0.029
H3 1.031 1.328 0.996
H4 -1.031 -1.328 0.996

Atom - Atom Distances (Å)
  Se1 Se2 H3 H4
Se12.32121.46382.8824
Se22.32122.88241.4638
H31.46382.88243.3628
H42.88241.46383.3628

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 96.566 Se2 Se1 H3 96.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.132      
2 Se -0.132      
3 H 0.132      
4 H 0.132      


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 1.072 1.072
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.040 2.028 0.000
y 2.028 -36.265 0.000
z 0.000 0.000 -38.148
Traceless
 xyz
x -0.833 2.028 0.000
y 2.028 1.829 0.000
z 0.000 0.000 -0.996
Polar
3z2-r2-1.991
x2-y2-1.775
xy2.028
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.026 0.394 0.000
y 0.394 9.766 0.000
z 0.000 0.000 5.998


<r2> (average value of r2) Å2
<r2> 122.708
(<r2>)1/2 11.077