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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-17.844555
Energy at 298.15K-17.848380
HF Energy-17.697547
Nuclear repulsion energy20.825301
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-121G
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' 3142 3066 15.88 63.37 0.75 0.86
2 A' 3009 2936 36.54 121.63 0.01 0.01
3 A' 2520 2460 36.01 177.62 0.37 0.54
4 A' 1493 1457 6.62 16.95 0.74 0.85
5 A' 1414 1380 10.30 1.04 0.70 0.83
6 A' 1093 1066 22.62 20.12 0.72 0.84
7 A' 768 750 2.74 10.52 0.60 0.75
8 A' 671 655 1.88 30.54 0.27 0.42
9 A" 3135 3060 21.52 63.90 0.75 0.86
10 A" 1481 1446 7.59 17.13 0.75 0.86
11 A" 996 972 6.01 11.24 0.75 0.86
12 A" 230 225 23.81 7.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9976.1 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 9736.7 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 MP2/CEP-121G
ABC
3.30659 0.39492 0.37877

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.213 0.000
S2 -0.050 -0.696 0.000
H3 1.329 -0.858 0.000
H4 -1.105 1.514 0.000
H5 0.442 1.598 0.902
H6 0.442 1.598 -0.902

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.90832.48781.09721.09741.0974
S21.90831.38882.44862.51312.5131
H32.48781.38883.39872.76212.7621
H41.09722.44863.39871.79321.7932
H51.09742.51312.76211.79321.8036
H61.09742.51312.76211.79321.8036

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.705 S2 C1 H4 105.943
S2 C1 H5 110.544 S2 C1 H6 110.544
H4 C1 H5 109.587 H4 C1 H6 109.587
H5 C1 H6 110.529
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability