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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/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/cc-pVTZ
 hartrees
Energy at 0K-476.153349
Energy at 298.15K-476.157847
HF Energy-475.610895
Nuclear repulsion energy101.278507
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/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 3172 2962 11.36      
2 A1 1524 1423 2.58      
3 A1 1162 1085 2.06      
4 A1 1069 998 0.85      
5 A1 663 619 22.60      
6 A2 3254 3039 0.00      
7 A2 1216 1136 0.00      
8 A2 919 858 0.00      
9 B1 3268 3051 3.76      
10 B1 979 914 2.92      
11 B1 845 789 0.29      
12 B2 3168 2958 10.19      
13 B2 1496 1397 0.55      
14 B2 1101 1028 24.86      
15 B2 706 659 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 12271.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 11457.5 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/cc-pVTZ
ABC
0.73894 0.36042 0.26814

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/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 -0.795
C3 0.000 -0.741 -0.795
H4 -0.913 1.248 -1.072
H5 0.913 1.248 -1.072
H6 0.913 -1.248 -1.072
H7 -0.913 -1.248 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81781.81782.47782.47782.47782.4778
C21.81781.48201.08001.08002.20562.2056
C31.81781.48202.20562.20561.08001.0800
H42.47781.08002.20561.82543.09192.4956
H52.47781.08002.20561.82542.49563.0919
H62.47782.20561.08003.09192.49561.8254
H72.47782.20561.08002.49563.09191.8254

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.943 S1 C2 H4 115.154
S1 C2 H5 115.154 S1 C3 C2 65.943
S1 C3 H6 115.154 S1 C3 H7 115.154
C2 S1 C3 48.113 C2 C3 H6 117.985
C2 C3 H7 117.985 C3 C2 H4 117.985
C3 C2 H5 117.985 H4 C2 H5 115.375
H6 C3 H7 115.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability