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 C2H4S (Thiirane)

using model chemistry: QCISD(T)=FULL/aug-cc-pVQZ

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(T)=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-476.349044
Energy at 298.15K 
HF Energy-475.620657
Nuclear repulsion energy101.392270
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(T)=FULL/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/aug-cc-pVQZ
ABC
0.74058 0.36123 0.26886

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.740 -0.795
C3 0.000 -0.740 -0.795
H4 -0.914 1.246 -1.068
H5 0.914 1.246 -1.068
H6 0.914 -1.246 -1.068
H7 -0.914 -1.246 -1.068

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81601.81602.47332.47332.47332.4733
C21.81601.47981.07951.07952.20302.2030
C31.81601.47982.20302.20301.07951.0795
H42.47331.07952.20301.82703.09032.4924
H52.47331.07952.20301.82702.49243.0903
H62.47332.20301.07953.09032.49241.8270
H72.47332.20301.07952.49243.09031.8270

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.956 S1 C2 H4 114.959
S1 C2 H5 114.959 S1 C3 C2 65.956
S1 C3 H6 114.959 S1 C3 H7 114.959
C2 S1 C3 48.087 C2 C3 H6 117.970
C2 C3 H7 117.970 C3 C2 H4 117.970
C3 C2 H5 117.970 H4 C2 H5 115.609
H6 C3 H7 115.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability