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All results from a given calculation for CH3SeCH3 (dimethylselenide)

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 C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-2481.636195
Energy at 298.15K-2481.640254
HF Energy-2481.636195
Nuclear repulsion energy186.819511
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 A1 3179 3052 9.92      
2 A1 3072 2950 24.91      
3 A1 1481 1422 0.66      
4 A1 1325 1272 2.17      
5 A1 981 942 21.32      
6 A1 606 582 0.24      
7 A1 206 198 0.01      
8 A2 3174 3048 0.00      
9 A2 1461 1403 0.00      
10 A2 898 863 0.00      
11 A2 157 150 0.00      
12 B1 3168 3042 19.61      
13 B1 1469 1411 17.40      
14 B1 929 892 13.93      
15 B1 144 138 0.42      
16 B2 3179 3052 2.60      
17 B2 3076 2953 23.13      
18 B2 1474 1415 17.62      
19 B2 1303 1251 6.16      
20 B2 860 826 0.47      
21 B2 621 596 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 16381.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 15727.4 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 B1B95/6-311G**
ABC
0.38003 0.22975 0.15146

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.473
C2 0.000 1.453 -0.819
C3 0.000 -1.453 -0.819
H4 0.000 2.382 -0.252
H5 0.000 -2.382 -0.252
H6 0.893 1.410 -1.437
H7 -0.893 1.410 -1.437
H8 -0.893 -1.410 -1.437
H9 0.893 -1.410 -1.437

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.94451.94452.48972.48972.53702.53702.53702.5370
C21.94452.90701.08753.87691.08751.08753.06323.0632
C31.94452.90703.87691.08753.06323.06321.08751.0875
H42.48971.08753.87694.76361.77371.77374.07234.0723
H52.48973.87691.08754.76364.07234.07231.77371.7737
H62.53701.08753.06321.77374.07231.78673.33922.8209
H72.53701.08753.06321.77374.07231.78672.82093.3392
H82.53703.06321.08754.07231.77373.33922.82091.7867
H92.53703.06321.08754.07231.77372.82093.33921.7867

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.980 Se1 C2 H6 110.384
Se1 C2 H7 110.384 Se1 C3 H5 106.980
Se1 C3 H8 110.384 Se1 C3 H9 110.384
C2 Se1 C3 96.748 H4 C2 H6 109.274
H4 C2 H7 109.274 H5 C3 H8 109.274
H5 C3 H9 109.274 H6 C2 H7 110.468
H8 C3 H9 110.468
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 -0.017      
2 C -0.444      
3 C -0.444      
4 H 0.153      
5 H 0.153      
6 H 0.150      
7 H 0.150      
8 H 0.150      
9 H 0.150      


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 -1.520 1.520
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.363 0.000 0.000
y 0.000 -29.061 0.000
z 0.000 0.000 -32.421
Traceless
 xyz
x -3.622 0.000 0.000
y 0.000 4.331 0.000
z 0.000 0.000 -0.710
Polar
3z2-r2-1.419
x2-y2-5.302
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.284 0.000 0.000
y 0.000 8.354 0.000
z 0.000 0.000 6.999


<r2> (average value of r2) Å2
<r2> 91.840
(<r2>)1/2 9.583