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All results from a given calculation for CH3SH (Methanethiol)

using model chemistry: QCISD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-438.090299
Energy at 298.15K-438.094181
HF Energy-437.717267
Nuclear repulsion energy56.255897
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(2df,p)
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' 3204 3035 4.77      
2 A' 3108 2945 17.80      
3 A' 2747 2603 3.52      
4 A' 1521 1441 6.16      
5 A' 1395 1322 7.77      
6 A' 1120 1061 13.49      
7 A' 813 770 0.68      
8 A' 737 698 2.01      
9 A" 3205 3036 5.59      
10 A" 1509 1429 3.68      
11 A" 995 942 4.37      
12 A" 244 231 14.22      

Unscaled Zero Point Vibrational Energy (zpe) 10298.6 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 9756.9 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(2df,p)
ABC
3.44327 0.42953 0.41194

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.048 1.154 0.000
S2 -0.048 -0.666 0.000
H3 1.283 -0.822 0.000
H4 -1.095 1.458 0.000
H5 0.433 1.550 0.894
H6 0.433 1.550 -0.894

Atom - Atom Distances (Å)
  C1 S2 H3 H4 H5 H6
C11.82012.38221.09011.08951.0895
S21.82011.33962.36772.43722.4372
H32.38221.33963.29382.67312.6731
H41.09012.36773.29381.77261.7726
H51.08952.43722.67311.77261.7880
H61.08952.43722.67311.77261.7880

picture of Methanethiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H3 96.683 S2 C1 H4 106.171
S2 C1 H5 111.293 S2 C1 H6 111.293
H4 C1 H5 108.831 H4 C1 H6 108.831
H5 C1 H6 110.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability