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: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-2476.830207
Energy at 298.15K-2476.834219
HF Energy-2476.554240
Nuclear repulsion energy182.277291
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 CCD/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 3161 3033 12.63      
2 A1 3058 2934 21.58      
3 A1 1532 1470 0.86      
4 A1 1399 1342 2.17      
5 A1 1017 976 23.61      
6 A1 552 530 0.18      
7 A1 224 215 0.00      
8 A2 3166 3038 0.00      
9 A2 1513 1452 0.00      
10 A2 908 871 0.00      
11 A2 138 132 0.00      
12 B1 3163 3035 30.80      
13 B1 1525 1463 18.84      
14 B1 941 903 13.21      
15 B1 145 139 0.20      
16 B2 3161 3033 5.85      
17 B2 3061 2937 24.79      
18 B2 1523 1461 16.17      
19 B2 1372 1316 5.10      
20 B2 900 864 0.22      
21 B2 570 547 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 16514.2 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 15845.4 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 CCD/6-31G
ABC
0.35550 0.22061 0.14379

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.490
C2 0.000 1.487 -0.851
C3 0.000 -1.487 -0.851
H4 0.000 2.430 -0.290
H5 0.000 -2.430 -0.290
H6 0.904 1.425 -1.469
H7 -0.904 1.425 -1.469
H8 -0.904 -1.425 -1.469
H9 0.904 -1.425 -1.469

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se12.00262.00262.55182.55182.58612.58612.58612.5861
C22.00262.97301.09763.95621.09671.09673.11063.1106
C32.00262.97303.95621.09763.11063.11061.09671.0967
H42.55181.09763.95624.85921.79371.79374.13114.1311
H52.55183.95621.09764.85924.13114.13111.79371.7937
H62.58611.09673.11061.79374.13111.80843.37532.8500
H72.58611.09673.11061.79374.13111.80842.85003.3753
H82.58613.11061.09674.13111.79373.37532.85001.8084
H92.58613.11061.09674.13111.79372.85003.37531.8084

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.154 Se1 C2 H6 109.617
Se1 C2 H7 109.617 Se1 C3 H5 107.154
Se1 C3 H8 109.617 Se1 C3 H9 109.617
C2 Se1 C3 95.856 H4 C2 H6 109.653
H4 C2 H7 109.653 H5 C3 H8 109.653
H5 C3 H9 109.653 H6 C2 H7 111.064
H8 C3 H9 111.064
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability