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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/aug-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 CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-476.162797
Energy at 298.15K-476.167287
HF Energy-475.612024
Nuclear repulsion energy101.243606
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 CCD/aug-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 3168 3032 11.80      
2 A1 1523 1457 2.17      
3 A1 1158 1109 1.88      
4 A1 1065 1019 0.72      
5 A1 660 632 23.31      
6 A2 3250 3110 0.00      
7 A2 1212 1160 0.00      
8 A2 913 874 0.00      
9 B1 3264 3123 1.88      
10 B1 975 933 2.45      
11 B1 842 806 0.56      
12 B2 3164 3028 7.80      
13 B2 1493 1429 0.73      
14 B2 1095 1048 20.97      
15 B2 702 671 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 12241.7 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 11715.3 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 CCD/aug-cc-pVTZ
ABC
0.73849 0.36013 0.26799

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.741 -0.796
C3 0.000 -0.741 -0.796
H4 -0.914 1.248 -1.070
H5 0.914 1.248 -1.070
H6 0.914 -1.248 -1.070
H7 -0.914 -1.248 -1.070

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81891.81892.47712.47712.47712.4771
C21.81891.48201.08041.08042.20622.2062
C31.81891.48202.20622.20621.08041.0804
H42.47711.08042.20621.82783.09422.4966
H52.47711.08042.20621.82782.49663.0942
H62.47712.20621.08043.09422.49661.8278
H72.47712.20621.08042.49663.09421.8278

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.958 S1 C2 H4 114.988
S1 C2 H5 114.988 S1 C3 C2 65.958
S1 C3 H6 114.988 S1 C3 H7 114.988
C2 S1 C3 48.084 C2 C3 H6 118.003
C2 C3 H7 118.003 C3 C2 H4 118.003
C3 C2 H5 118.003 H4 C2 H5 115.530
H6 C3 H7 115.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability