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All results from a given calculation for CH3SeCH3 (dimethylselenide)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-2479.164411
Energy at 298.15K-2479.168485
HF Energy-2479.164411
Nuclear repulsion energy186.288469
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 B3PW91/6-31G**
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 3182 3049 9.40      
2 A1 3071 2943 21.31      
3 A1 1492 1430 0.18      
4 A1 1337 1281 3.28      
5 A1 991 949 22.87      
6 A1 589 564 0.40      
7 A1 217 208 0.08      
8 A2 3181 3049 0.00      
9 A2 1472 1410 0.00      
10 A2 893 856 0.00      
11 A2 160 153 0.00      
12 B1 3176 3044 17.18      
13 B1 1484 1422 12.80      
14 B1 931 892 13.66      
15 B1 160 153 0.45      
16 B2 3182 3050 1.71      
17 B2 3074 2946 22.27      
18 B2 1484 1422 17.11      
19 B2 1311 1257 8.90      
20 B2 867 831 0.81      
21 B2 603 578 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 16426.9 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 15743.5 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 B3PW91/6-31G**
ABC
0.38393 0.22589 0.15047

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.470
C2 0.000 1.466 -0.814
C3 0.000 -1.466 -0.814
H4 0.000 2.391 -0.234
H5 0.000 -2.391 -0.234
H6 0.898 1.430 -1.433
H7 -0.898 1.430 -1.433
H8 -0.898 -1.430 -1.433
H9 0.898 -1.430 -1.433

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.94881.94882.49282.49282.54352.54352.54352.5435
C21.94882.93291.09153.90101.09131.09133.09463.0946
C31.94882.93293.90101.09153.09463.09461.09131.0913
H42.49281.09153.90104.78261.77981.77984.10394.1039
H52.49283.90101.09154.78264.10394.10391.77981.7798
H62.54351.09133.09461.77984.10391.79623.37662.8592
H72.54351.09133.09461.77984.10391.79622.85923.3766
H82.54353.09461.09134.10391.77983.37662.85921.7962
H92.54353.09461.09134.10391.77982.85923.37661.7962

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.731 Se1 C2 H6 110.369
Se1 C2 H7 110.369 Se1 C3 H5 106.731
Se1 C3 H8 110.369 Se1 C3 H9 110.369
C2 Se1 C3 97.609 H4 C2 H6 109.250
H4 C2 H7 109.250 H5 C3 H8 109.250
H5 C3 H9 109.250 H6 C2 H7 110.775
H8 C3 H9 110.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.016      
2 C -0.473      
3 C -0.473      
4 H 0.163      
5 H 0.163      
6 H 0.159      
7 H 0.159      
8 H 0.159      
9 H 0.159      


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 -1.575 1.575
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.851 0.000 0.000
y 0.000 -28.506 0.000
z 0.000 0.000 -31.941
Traceless
 xyz
x -3.628 0.000 0.000
y 0.000 4.390 0.000
z 0.000 0.000 -0.762
Polar
3z2-r2-1.524
x2-y2-5.345
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.219 0.000 0.000
y 0.000 7.910 0.000
z 0.000 0.000 6.505


<r2> (average value of r2) Å2
<r2> 92.045
(<r2>)1/2 9.594