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 CH3CHS (Thioacetaldehyde)

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-475.985926
Energy at 298.15K-475.989741
HF Energy-475.576161
Nuclear repulsion energy92.242061
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/cc-pVDZ
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' 3210 3057 5.50      
2 A' 3118 2970 25.59      
3 A' 3070 2924 6.40      
4 A' 1479 1408 4.89      
5 A' 1396 1330 46.17      
6 A' 1377 1311 10.27      
7 A' 1196 1140 12.69      
8 A' 1085 1034 1.15      
9 A' 847 807 3.83      
10 A' 397 378 1.39      
11 A" 3154 3004 6.67      
12 A" 1471 1401 9.04      
13 A" 1043 993 3.71      
14 A" 765 728 13.59      
15 A" 174 165 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 11890.3 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 11325.5 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/cc-pVDZ
ABC
1.60258 0.18903 0.17464

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.629 0.000
C2 -1.500 0.708 0.000
S3 0.883 -0.742 0.000
H4 0.516 1.606 0.000
H5 -1.954 -0.294 0.000
H6 -1.844 1.271 0.887
H7 -1.844 1.271 -0.887

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.50231.63041.10532.16082.14462.1446
C21.50232.78942.20741.09981.10521.1052
S31.63042.78942.37652.87183.50343.5034
H41.10532.20742.37653.11632.54342.5434
H52.16081.09982.87183.11631.80211.8021
H62.14461.10523.50342.54341.80211.7732
H72.14461.10523.50342.54341.80211.7732

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.342 C1 C2 H6 109.724
C1 C2 H7 109.724 C2 C1 S3 125.804
C2 C1 H4 114.818 S3 C1 H4 119.378
H5 C2 H6 109.628 H5 C2 H7 109.628
H6 C2 H7 106.683
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability