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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-437.986385
Energy at 298.15K-437.990286
HF Energy-437.699704
Nuclear repulsion energy56.111888
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 QCISD/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' 3185 3033 9.36      
2 A' 3093 2946 25.08      
3 A' 2717 2587 26.08      
4 A' 1538 1465 7.83      
5 A' 1435 1366 7.15      
6 A' 1142 1087 21.08      
7 A' 829 790 1.60      
8 A' 745 709 1.54      
9 A" 3182 3031 11.87      
10 A" 1525 1452 5.33      
11 A" 1021 973 5.76      
12 A" 253 241 17.79      

Unscaled Zero Point Vibrational Energy (zpe) 10331.9 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9839.1 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 QCISD/6-31G*
ABC
3.41919 0.42798 0.41027

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.155 0.000
S2 -0.048 -0.668 0.000
H3 1.291 -0.819 0.000
H4 -1.097 1.465 0.000
H5 0.434 1.557 0.896
H6 0.434 1.557 -0.896

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.82302.38521.09391.09371.0937
S21.82301.34822.37732.44652.4465
H32.38521.34823.30472.67962.6796
H41.09392.37733.30471.77611.7761
H51.09372.44652.67961.77611.7913
H61.09372.44652.67961.77611.7913

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.405 S2 C1 H4 106.480
S2 C1 H5 111.564 S2 C1 H6 111.564
H4 C1 H5 108.568 H4 C1 H6 108.568
H5 C1 H6 109.950
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability