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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-476.049717
Energy at 298.15K-476.054202
HF Energy-475.564552
Nuclear repulsion energy101.243770
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 MP2/6-31G(2df,p)
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 3200 3023 6.07      
2 A1 1509 1425 4.59      
3 A1 1167 1102 1.24      
4 A1 1062 1003 0.60      
5 A1 668 631 20.24      
6 A2 3295 3112 0.00      
7 A2 1205 1138 0.00      
8 A2 919 868 0.00      
9 B1 3308 3125 0.19      
10 B1 973 919 4.16      
11 B1 840 794 0.47      
12 B2 3198 3021 4.10      
13 B2 1485 1403 0.34      
14 B2 1084 1024 25.47      
15 B2 710 670 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 12311.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 11628.2 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 MP2/6-31G(2df,p)
ABC
0.73692 0.36070 0.26823

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.741 -0.794
C3 0.000 -0.741 -0.794
H4 -0.915 1.253 -1.067
H5 0.915 1.253 -1.067
H6 0.915 -1.253 -1.067
H7 -0.915 -1.253 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81521.81522.47632.47632.47632.4763
C21.81521.48171.08341.08342.21082.2108
C31.81521.48172.21082.21081.08341.0834
H42.47631.08342.21081.82943.10312.5065
H52.47631.08342.21081.82942.50653.1031
H62.47632.21081.08343.10312.50651.8294
H72.47632.21081.08342.50653.10311.8294

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.912 S1 C2 H4 115.017
S1 C2 H5 115.017 S1 C3 C2 65.912
S1 C3 H6 115.017 S1 C3 H7 115.017
C2 S1 C3 48.175 C2 C3 H6 118.228
C2 C3 H7 118.228 C3 C2 H4 118.228
C3 C2 H5 118.228 H4 C2 H5 115.201
H6 C3 H7 115.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability