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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-435.883622
Energy at 298.15K-435.887522
HF Energy-435.636549
Nuclear repulsion energy55.848452
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 CCD/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3139 3003 7.90      
2 A' 3063 2930 20.08      
3 A' 2727 2608 14.00      
4 A' 1573 1505 8.65      
5 A' 1455 1391 3.57      
6 A' 1155 1105 19.40      
7 A' 841 805 1.76      
8 A' 705 675 1.87      
9 A" 3143 3006 11.41      
10 A" 1563 1495 6.81      
11 A" 1033 988 6.45      
12 A" 252 241 18.76      

Unscaled Zero Point Vibrational Energy (zpe) 10324.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 9875.4 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 CCD/3-21G*
ABC
3.40931 0.42244 0.40520

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.165 0.000
S2 -0.048 -0.673 0.000
H3 1.287 -0.824 0.000
H4 -1.098 1.479 0.000
H5 0.439 1.559 0.897
H6 0.439 1.559 -0.897

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.83752.39551.09611.09481.0948
S21.83751.34362.39432.45462.4546
H32.39551.34363.31572.68442.6844
H41.09612.39433.31571.78181.7818
H51.09482.45462.68441.78181.7949
H61.09482.45462.68441.78181.7949

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.475 S2 C1 H4 106.664
S2 C1 H5 111.130 S2 C1 H6 111.130
H4 C1 H5 108.844 H4 C1 H6 108.844
H5 C1 H6 110.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability