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

using model chemistry: B3LYPultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYPultrafine/TZVP
 hartrees
Energy at 0K-4804.386259
Energy at 298.15K 
HF Energy-4804.386259
Nuclear repulsion energy294.667916
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 B3LYPultrafine/TZVP
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 2371 2284 17.99 204.53 0.09 0.17
2 A 738 711 0.22 29.36 0.48 0.65
3 A 364 350 6.27 27.51 0.75 0.86
4 A 277 267 0.01 12.57 0.28 0.43
5 B 2372 2286 23.28 153.00 0.75 0.86
6 B 736 709 11.19 10.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3429.1 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 3303.5 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 B3LYPultrafine/TZVP
ABC
3.94554 0.07306 0.07306

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 1.186 -0.030
Se2 0.000 -1.186 -0.030
H3 1.037 1.353 1.007
H4 -1.037 -1.353 1.007

Atom - Atom Distances (Å)
  Se1 Se2 H3 H4
Se12.37231.47602.9324
Se22.37232.93241.4760
H31.47602.93243.4098
H42.93241.47603.4098

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 96.498 Se2 Se1 H3 96.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.062      
2 Se -0.062      
3 H 0.062      
4 H 0.062      


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 0.961 0.961
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.136 1.837 0.000
y 1.837 -35.878 0.000
z 0.000 0.000 -38.208
Traceless
 xyz
x -1.093 1.837 0.000
y 1.837 2.294 0.000
z 0.000 0.000 -1.201
Polar
3z2-r2-2.402
x2-y2-2.258
xy1.837
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.133 0.428 0.000
y 0.428 9.908 0.000
z 0.000 0.000 5.115


<r2> (average value of r2) Å2
<r2> 126.940
(<r2>)1/2 11.267