return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-435.706203
Energy at 298.15K-435.709995
HF Energy-435.525051
Nuclear repulsion energy54.104279
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 MP4/3-21G
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' 3172 3076        
2 A' 3075 2982        
3 A' 2394 2322        
4 A' 1557 1510        
5 A' 1409 1366        
6 A' 1095 1062        
7 A' 778 755        
8 A' 624 605        
9 A" 3172 3076        
10 A" 1553 1506        
11 A" 982 952        
12 A" 229 222        

Unscaled Zero Point Vibrational Energy (zpe) 10019.3 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 9716.7 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 MP4/3-21G
ABC
3.31566 0.38971 0.37418

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.050 1.226 0.000
S2 -0.050 -0.700 0.000
H3 1.322 -0.852 0.000
H4 -1.106 1.511 0.000
H5 0.442 1.596 0.903
H6 0.442 1.596 -0.903

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.92612.49021.09361.09311.0931
S21.92611.38042.45062.51652.5165
H32.49021.38043.38832.75462.7546
H41.09362.45063.38831.79371.7937
H51.09312.51652.75461.79371.8065
H61.09312.51652.75461.79371.8065

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.325 S2 C1 H4 105.133
S2 C1 H5 109.822 S2 C1 H6 109.822
H4 C1 H5 110.219 H4 C1 H6 110.219
H5 C1 H6 111.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability