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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-4804.902455
Energy at 298.15K 
HF Energy-4804.902455
Nuclear repulsion energy299.432752
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 B1B95/6-311G*
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 2372 2274 14.38 208.66 0.09 0.17
2 A 761 729 0.12 31.30 0.48 0.65
3 A 387 371 6.05 19.71 0.75 0.86
4 A 299 287 0.00 10.87 0.26 0.41
5 B 2373 2275 20.70 153.43 0.75 0.86
6 B 760 728 14.94 12.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3475.5 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 3331.6 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 B1B95/6-311G*
ABC
3.92791 0.07569 0.07569

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 1.165 -0.030
Se2 0.000 -1.165 -0.030
H3 1.042 1.331 1.007
H4 -1.042 -1.331 1.007

Atom - Atom Distances (Å)
  Se1 Se2 H3 H4
Se12.33021.47922.8968
Se22.33022.89681.4792
H31.47922.89683.3808
H42.89681.47923.3808

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 96.447 Se2 Se1 H3 96.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.161      
2 Se -0.161      
3 H 0.161      
4 H 0.161      


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 0.951 0.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.765 1.800 0.000
y 1.800 -35.717 0.000
z 0.000 0.000 -37.860
Traceless
 xyz
x -0.976 1.800 0.000
y 1.800 2.095 0.000
z 0.000 0.000 -1.119
Polar
3z2-r2-2.239
x2-y2-2.048
xy1.800
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.284 0.474 0.000
y 0.474 9.697 0.000
z 0.000 0.000 5.245


<r2> (average value of r2) Å2
<r2> 123.288
(<r2>)1/2 11.103