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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-438.153841
Energy at 298.15K-438.157712
HF Energy-437.756542
Nuclear repulsion energy56.298775
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/cc-pVTZ
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' 3167 3026 7.43      
2 A' 3078 2941 22.91      
3 A' 2728 2607 4.63      
4 A' 1510 1443 6.09      
5 A' 1378 1317 6.76      
6 A' 1111 1061 10.43      
7 A' 807 771 0.54      
8 A' 731 698 1.52      
9 A" 3169 3028 8.60      
10 A" 1496 1430 3.84      
11 A" 987 943 3.71      
12 A" 238 227 12.57      

Unscaled Zero Point Vibrational Energy (zpe) 10200.2 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 9746.3 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/cc-pVTZ
ABC
3.45356 0.42995 0.41232

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.153 0.000
S2 -0.048 -0.666 0.000
H3 1.282 -0.819 0.000
H4 -1.092 1.456 0.000
H5 0.432 1.549 0.892
H6 0.432 1.549 -0.892

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.81942.37951.08741.08671.0867
S21.81941.33922.36502.43492.4349
H32.37951.33923.28892.66952.6695
H41.08742.36503.28891.76801.7680
H51.08672.43492.66951.76801.7832
H61.08672.43492.66951.76801.7832

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.581 S2 C1 H4 106.152
S2 C1 H5 111.319 S2 C1 H6 111.319
H4 C1 H5 108.821 H4 C1 H6 108.821
H5 C1 H6 110.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability