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: CCSD=FULL/daug-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 CCSD=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-475.007222
Energy at 298.15K 
HF Energy-474.420261
Nuclear repulsion energy79.010997
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 CCSD=FULL/daug-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 3211 3211 20.31      
2 A1 1854 1854 378.25      
3 A1 1419 1419 0.05      
4 A1 869 869 16.12      
5 B1 779 779 70.17      
6 B1 429 429 6.21      
7 B2 3263 3263 2.85      
8 B2 962 962 0.96      
9 B2 361 361 2.27      

Unscaled Zero Point Vibrational Energy (zpe) 6572.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6572.8 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 CCSD=FULL/daug-cc-pVTZ
ABC
9.69854 0.18955 0.18591

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.751
C2 0.000 0.000 -0.447
S3 0.000 0.000 1.111
H4 0.000 0.929 -2.294
H5 0.000 -0.929 -2.294

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5
C11.30392.86241.07571.0757
C21.30391.55852.06722.0672
S32.86241.55853.52983.5298
H41.07572.06723.52981.8572
H51.07572.06723.52981.8572

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 120.318
C2 C1 H5 120.318 H4 C1 H5 119.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability