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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: LSDA/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 LSDA/6-31G**
 hartrees
Energy at 0K-2476.079319
Energy at 298.15K-2476.083354
HF Energy-2476.079319
Nuclear repulsion energy187.882328
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 LSDA/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 3117 3059 4.31      
2 A1 2998 2942 17.64      
3 A1 1426 1399 0.14      
4 A1 1274 1250 0.61      
5 A1 952 934 23.75      
6 A1 602 591 0.29      
7 A1 210 206 0.09      
8 A2 3111 3053 0.00      
9 A2 1403 1377 0.00      
10 A2 854 838 0.00      
11 A2 168 165 0.00      
12 B1 3102 3044 8.95      
13 B1 1417 1390 18.33      
14 B1 896 879 16.31      
15 B1 162 159 0.48      
16 B2 3119 3061 0.06      
17 B2 3003 2947 12.17      
18 B2 1417 1391 23.67      
19 B2 1248 1225 1.95      
20 B2 827 811 1.21      
21 B2 613 602 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 15958.2 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 15659.8 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 LSDA/6-31G**
ABC
0.38222 0.23418 0.15396

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.471
C2 0.000 1.436 -0.814
C3 0.000 -1.436 -0.814
H4 0.000 2.378 -0.247
H5 0.000 -2.378 -0.247
H6 0.905 1.392 -1.438
H7 -0.905 1.392 -1.438
H8 -0.905 -1.392 -1.438
H9 0.905 -1.392 -1.438

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.92671.92672.48412.48412.52972.52972.52972.5297
C21.92672.87181.09963.85591.10001.10003.03363.0336
C31.92672.87183.85591.09963.03363.03361.10001.1000
H42.48411.09963.85594.75621.79181.79184.05564.0556
H52.48413.85591.09964.75624.05564.05561.79181.7918
H62.52971.10003.03361.79184.05561.80913.31952.7832
H72.52971.10003.03361.79184.05561.80912.78323.3195
H82.52973.03361.10004.05561.79183.31952.78321.8091
H92.52973.03361.10004.05561.79182.78323.31951.8091

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.152 Se1 C2 H6 110.393
Se1 C2 H7 110.393 Se1 C3 H5 107.152
Se1 C3 H8 110.393 Se1 C3 H9 110.393
C2 Se1 C3 96.363 H4 C2 H6 109.093
H4 C2 H7 109.093 H5 C3 H8 109.093
H5 C3 H9 109.093 H6 C2 H7 110.632
H8 C3 H9 110.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Se -0.026      
2 C -0.498      
3 C -0.498      
4 H 0.174      
5 H 0.174      
6 H 0.168      
7 H 0.168      
8 H 0.168      
9 H 0.168      


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 -1.561 1.561
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.867 0.000 0.000
y 0.000 -28.551 0.000
z 0.000 0.000 -31.984
Traceless
 xyz
x -3.599 0.000 0.000
y 0.000 4.374 0.000
z 0.000 0.000 -0.775
Polar
3z2-r2-1.550
x2-y2-5.316
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.281 0.000 0.000
y 0.000 7.862 0.000
z 0.000 0.000 6.546


<r2> (average value of r2) Å2
<r2> 90.605
(<r2>)1/2 9.519