return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH2CS (Thioketene)

using model chemistry: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-474.932056
Energy at 298.15K 
HF Energy-474.419569
Nuclear repulsion energy78.623637
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/aug-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 A1 3180 3060 19.85      
2 A1 1823 1754 363.45      
3 A1 1405 1352 0.03      
4 A1 851 819 15.76      
5 B1 743 715 69.89      
6 B1 415 399 6.04      
7 B2 3269 3146 2.60      
8 B2 953 917 0.98      
9 B2 357 344 2.08      

Unscaled Zero Point Vibrational Energy (zpe) 6497.4 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 6253.1 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/aug-cc-pVTZ
ABC
9.58823 0.18768 0.18408

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.761
C2 0.000 0.000 -0.449
S3 0.000 0.000 1.117
H4 0.000 0.934 -2.304
H5 0.000 -0.934 -2.304

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5
C11.31142.87711.08041.0804
C21.31141.56582.07642.0764
S32.87711.56583.54553.5455
H41.08042.07643.54551.8679
H51.08042.07643.54551.8679

picture of Thioketene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 S3 180.000 C2 C1 H4 120.181
C2 C1 H5 120.181 H4 C1 H5 119.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability