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All results from a given calculation for CH2CS (Thioketene)

using model chemistry: CISD/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 CISD/cc-pVTZ
 hartrees
Energy at 0K-474.859981
Energy at 298.15K 
HF Energy-474.419083
Nuclear repulsion energy79.207953
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 CISD/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 3251 3023 24.90      
2 A1 1886 1754 431.62      
3 A1 1443 1342 0.21      
4 A1 889 826 20.02      
5 B1 796 740 81.17      
6 B1 444 413 4.84      
7 B2 3343 3108 3.24      
8 B2 978 910 0.39      
9 B2 378 352 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 6703.9 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 6233.3 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 CISD/cc-pVTZ
ABC
9.68999 0.19055 0.18687

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.747
C2 0.000 0.000 -0.446
S3 0.000 0.000 1.108
H4 0.000 0.929 -2.287
H5 0.000 -0.929 -2.287

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5
C11.30162.85531.07451.0745
C21.30161.55382.06252.0625
S32.85531.55383.52003.5200
H41.07452.06253.52001.8581
H51.07452.06253.52001.8581

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 120.160
C2 C1 H5 120.160 H4 C1 H5 119.680
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability