return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-311G**
 hartrees
Energy at 0K-2480.954299
Energy at 298.15K 
HF Energy-2480.685949
Nuclear repulsion energy185.654105
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 B2PLYP=FULLultrafine/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 3171 3171 10.93      
2 A1 3069 3069 25.44      
3 A1 1497 1497 0.49      
4 A1 1344 1344 3.60      
5 A1 990 990 19.64      
6 A1 592 592 0.30      
7 A1 213 213 0.01      
8 A2 3168 3168 0.00      
9 A2 1476 1476 0.00      
10 A2 909 909 0.00      
11 A2 153 153 0.00      
12 B1 3162 3162 21.45      
13 B1 1485 1485 15.27      
14 B1 940 940 12.69      
15 B1 152 152 0.34      
16 B2 3172 3172 3.43      
17 B2 3073 3073 24.33      
18 B2 1490 1490 16.12      
19 B2 1321 1321 9.56      
20 B2 872 872 0.29      
21 B2 608 608 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 16428.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16428.7 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 B2PLYP=FULLultrafine/6-311G**
ABC
0.37479 0.22685 0.14940

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.476
C2 0.000 1.464 -0.825
C3 0.000 -1.464 -0.825
H4 0.000 2.394 -0.258
H5 0.000 -2.394 -0.258
H6 0.895 1.418 -1.445
H7 -0.895 1.418 -1.445
H8 -0.895 -1.418 -1.445
H9 0.895 -1.418 -1.445

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.95921.95922.50382.50382.54962.54962.54962.5496
C21.95922.92791.08903.89901.08891.08893.08013.0801
C31.95922.92793.89901.08903.08013.08011.08891.0889
H42.50381.08903.89904.78721.77771.77774.09064.0906
H52.50383.89901.08904.78724.09064.09061.77771.7777
H62.54961.08893.08011.77774.09061.78913.35252.8352
H72.54961.08893.08011.77774.09061.78912.83523.3525
H82.54963.08011.08894.09061.77773.35252.83521.7891
H92.54963.08011.08894.09061.77772.83523.35251.7891

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 106.963 Se1 C2 H6 110.246
Se1 C2 H7 110.246 Se1 C3 H5 106.963
Se1 C3 H8 110.246 Se1 C3 H9 110.246
C2 Se1 C3 96.703 H4 C2 H6 109.419
H4 C2 H7 109.419 H5 C3 H8 109.419
H5 C3 H9 109.419 H6 C2 H7 110.476
H8 C3 H9 110.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability