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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-473.596609
Energy at 298.15K-473.600452
HF Energy-473.273858
Nuclear repulsion energy92.318159
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 MP2=FULL/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' 3185 3019 7.94      
2 A' 3129 2966 15.92      
3 A' 3072 2912 2.72      
4 A' 1580 1498 6.40      
5 A' 1482 1405 10.56      
6 A' 1447 1371 36.00      
7 A' 1185 1124 23.00      
8 A' 1132 1073 0.72      
9 A' 838 794 3.27      
10 A' 413 392 1.02      
11 A" 3131 2968 7.64      
12 A" 1577 1495 10.80      
13 A" 1116 1058 2.32      
14 A" 799 758 22.23      
15 A" 164 156 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 12124.7 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 11494.2 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 MP2=FULL/3-21G*
ABC
1.59861 0.18899 0.17454

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 0.000
C2 -1.515 0.690 0.000
S3 0.891 -0.730 0.000
H4 0.498 1.602 0.000
H5 -1.936 -0.318 0.000
H6 -1.866 1.235 0.886
H7 -1.866 1.235 -0.886

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.51631.62541.09232.15552.15262.1526
C21.51632.79392.20971.09241.09761.0976
S31.62542.79392.36472.85713.49983.4998
H41.09232.20972.36473.09992.55072.5507
H52.15551.09242.85713.09991.78941.7894
H62.15261.09763.49982.55071.78941.7711
H72.15261.09763.49982.55071.78941.7711

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.383 C1 C2 H6 109.838
C1 C2 H7 109.838 C2 C1 S3 125.533
C2 C1 H4 114.820 S3 C1 H4 119.648
H5 C2 H6 109.584 H5 C2 H7 109.584
H6 C2 H7 107.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability