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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-435.852350
Energy at 298.15K-435.856273
HF Energy-435.636868
Nuclear repulsion energy56.011240
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3192 3037 5.94 55.32 0.75 0.86
2 A' 3109 2957 18.41 88.47 0.01 0.01
3 A' 2788 2652 9.13 110.22 0.38 0.55
4 A' 1593 1516 9.26 21.18 0.75 0.86
5 A' 1470 1399 4.50 4.93 0.51 0.68
6 A' 1166 1110 20.18 19.30 0.72 0.84
7 A' 848 807 1.90 7.37 0.66 0.80
8 A' 715 680 2.67 14.72 0.30 0.46
9 A" 3194 3039 9.27 59.23 0.75 0.86
10 A" 1582 1505 7.13 23.75 0.75 0.86
11 A" 1046 995 7.05 8.34 0.75 0.86
12 A" 262 249 20.85 7.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10482.6 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 9972.1 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 MP2/3-21G*
ABC
3.43375 0.42464 0.40739

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.162 0.000
S2 -0.048 -0.671 0.000
H3 1.281 -0.825 0.000
H4 -1.095 1.473 0.000
H5 0.437 1.556 0.895
H6 0.437 1.556 -0.895

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.83282.39011.09251.09131.0913
S21.83281.33792.38582.44832.4483
H32.39011.33793.30532.67952.6795
H41.09252.38583.30531.77641.7764
H51.09132.44832.67951.77641.7896
H61.09132.44832.67951.77641.7896

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.598 S2 C1 H4 106.529
S2 C1 H5 111.155 S2 C1 H6 111.155
H4 C1 H5 108.865 H4 C1 H6 108.865
H5 C1 H6 110.155
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability