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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-2476.832388
Energy at 298.15K-2476.836379
HF Energy-2476.554027
Nuclear repulsion energy181.941736
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 QCISD/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 3150 3036 12.60      
2 A1 3047 2936 22.74      
3 A1 1528 1472 0.71      
4 A1 1391 1340 3.16      
5 A1 1013 976 23.30      
6 A1 542 523 0.37      
7 A1 222 214 0.00      
8 A2 3155 3040 0.00      
9 A2 1510 1455 0.00      
10 A2 904 871 0.00      
11 A2 138 133 0.00      
12 B1 3152 3037 31.22      
13 B1 1521 1466 18.37      
14 B1 938 903 13.18      
15 B1 144 138 0.19      
16 B2 3151 3036 6.02      
17 B2 3050 2939 26.75      
18 B2 1519 1464 16.03      
19 B2 1363 1313 7.95      
20 B2 897 864 0.18      
21 B2 560 540 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 16446.2 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 15847.5 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 QCISD/6-31G
ABC
0.35358 0.21999 0.14322

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.492
C2 0.000 1.489 -0.854
C3 0.000 -1.489 -0.854
H4 0.000 2.432 -0.292
H5 0.000 -2.432 -0.292
H6 0.905 1.425 -1.471
H7 -0.905 1.425 -1.471
H8 -0.905 -1.425 -1.471
H9 0.905 -1.425 -1.471

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se12.00732.00732.55562.55562.58922.58922.58922.5892
C22.00732.97811.09803.96141.09711.09713.11323.1132
C32.00732.97813.96141.09803.11323.11321.09711.0971
H42.55561.09803.96144.86461.79541.79544.13384.1338
H52.55563.96141.09804.86464.13384.13381.79541.7954
H62.58921.09713.11321.79544.13381.80993.37632.8502
H72.58921.09713.11321.79544.13381.80992.85023.3763
H82.58923.11321.09714.13381.79543.37632.85021.8099
H92.58923.11321.09714.13381.79542.85023.37631.8099

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.098 Se1 C2 H6 109.505
Se1 C2 H7 109.505 Se1 C3 H5 107.098
Se1 C3 H8 109.505 Se1 C3 H9 109.505
C2 Se1 C3 95.771 H4 C2 H6 109.751
H4 C2 H7 109.751 H5 C3 H8 109.751
H5 C3 H9 109.751 H6 C2 H7 111.142
H8 C3 H9 111.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability