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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-2479.184739
Energy at 298.15K-2479.188808
HF Energy-2479.184739
Nuclear repulsion energy186.485795
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 B3PW91/6-31+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 A1 3172 3046 8.92      
2 A1 3062 2940 27.21      
3 A1 1484 1425 0.87      
4 A1 1342 1288 2.90      
5 A1 1001 961 22.08      
6 A1 597 573 0.26      
7 A1 209 201 0.02      
8 A2 3165 3039 0.00      
9 A2 1465 1407 0.00      
10 A2 921 884 0.00      
11 A2 151 145 0.00      
12 B1 3159 3033 13.54      
13 B1 1477 1418 16.31      
14 B1 953 915 12.38      
15 B1 155 149 0.45      
16 B2 3173 3046 2.38      
17 B2 3065 2943 25.62      
18 B2 1476 1417 18.94      
19 B2 1317 1265 5.81      
20 B2 881 845 0.24      
21 B2 605 581 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 16414.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 15759.9 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 B3PW91/6-31+G**
ABC
0.38192 0.22771 0.15090

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.471
C2 0.000 1.460 -0.815
C3 0.000 -1.460 -0.815
H4 0.000 2.390 -0.244
H5 0.000 -2.390 -0.244
H6 0.895 1.422 -1.440
H7 -0.895 1.422 -1.440
H8 -0.895 -1.422 -1.440
H9 0.895 -1.422 -1.440

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.94551.94552.49512.49512.54522.54522.54522.5452
C21.94552.91911.09223.89221.09231.09233.08193.0819
C31.94552.91913.89221.09223.08193.08191.09231.0923
H42.49511.09223.89224.78091.78031.78034.09524.0952
H52.49513.89221.09224.78094.09524.09521.78031.7803
H62.54521.09233.08191.78034.09521.79013.36132.8449
H72.54521.09233.08191.78034.09521.79012.84493.3613
H82.54523.08191.09234.09521.78033.36132.84491.7901
H92.54523.08191.09234.09521.78032.84493.36131.7901

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.070 Se1 C2 H6 110.662
Se1 C2 H7 110.662 Se1 C3 H5 107.070
Se1 C3 H8 110.662 Se1 C3 H9 110.662
C2 Se1 C3 97.217 H4 C2 H6 109.162
H4 C2 H7 109.162 H5 C3 H8 109.162
H5 C3 H9 109.162 H6 C2 H7 110.052
H8 C3 H9 110.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.044      
2 C -0.530      
3 C -0.530      
4 H 0.184      
5 H 0.184      
6 H 0.184      
7 H 0.184      
8 H 0.184      
9 H 0.184      


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 -1.663 1.663
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.615 0.000 0.000
y 0.000 -29.015 0.000
z 0.000 0.000 -32.579
Traceless
 xyz
x -3.818 0.000 0.000
y 0.000 4.582 0.000
z 0.000 0.000 -0.764
Polar
3z2-r2-1.529
x2-y2-5.600
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.348 0.000 0.000
y 0.000 8.483 0.000
z 0.000 0.000 7.330


<r2> (average value of r2) Å2
<r2> 92.260
(<r2>)1/2 9.605