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All results from a given calculation for CH3SCH3 (Dimethyl sulfide)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-24.770481
Energy at 298.15K 
HF Energy-24.399406
Nuclear repulsion energy43.457543
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 MP2/CEP-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 3206 3044 20.99 93.02 0.72 0.84
2 A1 3084 2928 39.03 256.19 0.01 0.01
3 A1 1514 1437 0.21 22.92 0.74 0.85
4 A1 1416 1345 1.98 0.95 0.32 0.48
5 A1 1081 1026 20.95 12.69 0.59 0.74
6 A1 731 694 3.42 23.55 0.14 0.24
7 A1 267 253 0.12 2.46 0.65 0.79
8 A2 3194 3032 0.00 6.29 0.75 0.86
9 A2 1487 1412 0.00 33.00 0.75 0.86
10 A2 983 934 0.00 16.43 0.75 0.86
11 A2 168 159 0.00 0.66 0.75 0.86
12 B1 3187 3026 53.36 98.91 0.75 0.86
13 B1 1496 1420 17.52 0.16 0.75 0.86
14 B1 1020 968 10.50 6.62 0.75 0.86
15 B1 193 183 1.23 0.36 0.75 0.86
16 B2 3207 3044 7.48 45.00 0.75 0.86
17 B2 3089 2932 39.94 0.42 0.75 0.86
18 B2 1506 1430 16.36 0.18 0.75 0.86
19 B2 1390 1320 4.73 4.10 0.75 0.86
20 B2 940 893 0.23 2.47 0.75 0.86
21 B2 786 746 0.19 13.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16972.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 16113.5 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 MP2/CEP-31G*
ABC
0.57338 0.25083 0.18722

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.673
C2 0.000 1.380 -0.522
C3 0.000 -1.380 -0.522
H4 0.000 2.317 0.060
H5 0.000 -2.317 0.060
H6 0.902 1.353 -1.157
H7 -0.902 1.353 -1.157
H8 -0.902 -1.353 -1.157
H9 0.902 -1.353 -1.157

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7 H8 H9
S11.82591.82592.39642.39642.44872.44872.44872.4487
C21.82592.76051.10253.74241.10381.10382.94792.9479
C31.82592.76053.74241.10252.94792.94791.10381.1038
H42.39641.10253.74244.63321.79551.79553.97053.9705
H52.39643.74241.10254.63323.97053.97051.79551.7955
H62.44871.10382.94791.79553.97051.80473.25322.7067
H72.44871.10382.94791.79553.97051.80472.70673.2532
H82.44872.94791.10383.97051.79553.25322.70671.8047
H92.44872.94791.10383.97051.79552.70673.25321.8047

picture of Dimethyl sulfide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H4 107.239 S1 C2 H6 110.994
S1 C2 H7 110.994 S1 C3 H5 107.239
S1 C3 H8 110.994 S1 C3 H9 110.994
C2 S1 C3 98.216 H4 C2 H6 108.936
H4 C2 H7 108.936 H5 C3 H8 108.936
H5 C3 H9 108.936 H6 C2 H7 109.670
H8 C3 H9 109.670
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability