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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-2479.884999
Energy at 298.15K-2479.878847
HF Energy-2476.788021
Nuclear repulsion energy186.988599
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 CBS-Q
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 3316 3316 14.57      
2 A1 3215 3215 29.64      
3 A1 1624 1624 0.09      
4 A1 1476 1476 5.90      
5 A1 1084 1084 23.01      
6 A1 626 626 1.04      
7 A1 234 234 0.01      
8 A2 3317 3317 0.00      
9 A2 1605 1605 0.00      
10 A2 975 975 0.00      
11 A2 169 169 0.00      
12 B1 3313 3313 27.68      
13 B1 1617 1617 10.78      
14 B1 1010 1010 9.07      
15 B1 175 175 0.33      
16 B2 3316 3316 5.78      
17 B2 3216 3216 38.34      
18 B2 1616 1616 12.81      
19 B2 1449 1449 20.62      
20 B2 949 949 0.18      
21 B2 647 647 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 17473.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17473.5 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 CBS-Q
ABC
0.37733 0.23000 0.15126

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.466
C2 0.000 1.466 -0.807
C3 0.000 -1.466 -0.807
H4 0.000 2.387 -0.235
H5 0.000 -2.387 -0.235
H6 0.891 1.428 -1.423
H7 -0.891 1.428 -1.423
H8 -0.891 -1.428 -1.423
H9 0.891 -1.428 -1.423

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.94151.94152.48832.48832.53002.53002.53002.5300
C21.94152.93241.08433.89591.08381.08383.09013.0901
C31.94152.93243.89591.08433.09013.09011.08381.0838
H42.48831.08433.89594.77501.76791.76794.09414.0941
H52.48833.89591.08434.77504.09414.09411.76791.7679
H62.53001.08383.09011.76794.09411.78133.36582.8558
H72.53001.08383.09011.76794.09411.78132.85583.3658
H82.53003.09011.08384.09411.76793.36582.85581.7813
H92.53003.09011.08384.09411.76792.85583.36581.7813

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.220 Se1 C2 H6 110.249
Se1 C2 H7 110.249 Se1 C3 H5 107.220
Se1 C3 H8 110.249 Se1 C3 H9 110.249
C2 Se1 C3 98.081 H4 C2 H6 109.261
H4 C2 H7 109.261 H5 C3 H8 109.261
H5 C3 H9 109.261 H6 C2 H7 110.532
H8 C3 H9 110.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability