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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-437.962274
Energy at 298.15K-437.966199
HF Energy-437.700040
Nuclear repulsion energy56.297629
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 CISD/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 A' 3238 2998 8.66      
2 A' 3147 2913 25.07      
3 A' 2786 2579 23.27      
4 A' 1562 1446 8.17      
5 A' 1458 1350 7.25      
6 A' 1162 1076 22.05      
7 A' 842 780 1.65      
8 A' 760 704 1.84      
9 A" 3237 2997 11.07      
10 A" 1550 1435 5.65      
11 A" 1037 960 5.69      
12 A" 258 239 18.48      

Unscaled Zero Point Vibrational Energy (zpe) 10518.6 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 9738.1 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 CISD/6-31G*
ABC
3.44967 0.43044 0.41271

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.152 0.000
S2 -0.048 -0.666 0.000
H3 1.283 -0.827 0.000
H4 -1.091 1.466 0.000
H5 0.433 1.551 0.892
H6 0.433 1.551 -0.892

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.81812.38541.08951.08901.0890
S21.81811.34082.37352.43782.4378
H32.38541.34083.30102.67872.6787
H41.08952.37353.30101.76831.7683
H51.08902.43782.67871.76831.7831
H61.08902.43782.67871.76831.7831

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.916 S2 C1 H4 106.738
S2 C1 H5 111.505 S2 C1 H6 111.505
H4 C1 H5 108.525 H4 C1 H6 108.525
H5 C1 H6 109.905
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability