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 H2CS (Thioformaldehyde)

using model chemistry: CCSD(T)/cc-pV(T+d)Z

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)/cc-pV(T+d)Z
 hartrees
Energy at 0K-436.937641
Energy at 298.15K-436.939019
HF Energy-436.558369
Nuclear repulsion energy44.637420
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)/cc-pV(T+d)Z
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 3083 2975        
2 A1 1500 1448        
3 A1 1069 1032        
4 B1 1008 973        
5 B2 3172 3061        
6 B2 1005 970        

Unscaled Zero Point Vibrational Energy (zpe) 5419.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5229.4 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)/cc-pV(T+d)Z
ABC
9.81073 0.58622 0.55317

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.587
C2 0.000 0.000 -1.031
H3 0.000 0.923 -1.606
H4 0.000 -0.923 -1.606

Atom - Atom Distances (Å)
  S1 C2 H3 H4
S11.61802.37972.3797
C21.61801.08781.0878
H32.37971.08781.8466
H42.37971.08781.8466

picture of Thioformaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 H3 121.925 S1 C2 H4 121.925
H3 C2 H4 116.150
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability