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 CH2CS (Thioketene)

using model chemistry: CCSD(T)=FULL/6-31G*

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(T)=FULL/6-31G*
 hartrees
Energy at 0K-474.791915
Energy at 298.15K 
HF Energy-474.353994
Nuclear repulsion energy78.205229
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(T)=FULL/6-31G*
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 3178 3085        
2 A1 1828 1774        
3 A1 1426 1384        
4 A1 848 824        
5 B1 725 704        
6 B1 394 382        
7 B2 3265 3169        
8 B2 977 949        
9 B2 349 339        

Unscaled Zero Point Vibrational Energy (zpe) 6495.1 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 6304.8 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(T)=FULL/6-31G*
ABC
9.55971 0.18563 0.18209

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.769
C2 0.000 0.000 -0.450
S3 0.000 0.000 1.123
H4 0.000 0.935 -2.325
H5 0.000 -0.935 -2.325

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5
C11.31942.89191.08781.0878
C21.31941.57252.09512.0951
S32.89191.57253.57183.5718
H41.08782.09513.57181.8707
H51.08782.09513.57181.8707

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 120.699
C2 C1 H5 120.699 H4 C1 H5 118.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability