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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/daug-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 MP2/daug-cc-pVTZ
 hartrees
Energy at 0K-476.138010
Energy at 298.15K-476.142464
HF Energy-475.612113
Nuclear repulsion energy101.220323
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 MP2/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3169 3169 10.07      
2 A1 1504 1504 2.31      
3 A1 1153 1153 1.45      
4 A1 1048 1048 1.33      
5 A1 655 655 19.78      
6 A2 3260 3260 0.00      
7 A2 1196 1196 0.00      
8 A2 907 907 0.00      
9 B1 3273 3273 0.48      
10 B1 962 962 3.02      
11 B1 834 834 0.52      
12 B2 3167 3167 5.30      
13 B2 1479 1479 0.83      
14 B2 1065 1065 20.32      
15 B2 693 693 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 12182.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12182.4 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 MP2/daug-cc-pVTZ
ABC
0.73950 0.35948 0.26789

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/daug-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 0.740 -0.798
C3 0.000 -0.740 -0.798
H4 -0.916 1.247 -1.066
H5 0.916 1.247 -1.066
H6 0.916 -1.247 -1.066
H7 -0.916 -1.247 -1.066

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82061.82062.47472.47472.47472.4747
C21.82061.48001.08061.08062.20452.2045
C31.82061.48002.20452.20451.08061.0806
H42.47471.08062.20451.83173.09482.4946
H52.47471.08062.20451.83172.49463.0948
H62.47472.20451.08063.09482.49461.8317
H72.47472.20451.08062.49463.09481.8317

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.017 S1 C2 H4 114.657
S1 C2 H5 114.657 S1 C3 C2 66.017
S1 C3 H6 114.657 S1 C3 H7 114.657
C2 S1 C3 47.965 C2 C3 H6 117.996
C2 C3 H7 117.996 C3 C2 H4 117.996
C3 C2 H5 117.996 H4 C2 H5 115.881
H6 C3 H7 115.881
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability