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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/cc-pV(T+d)Z

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/cc-pV(T+d)Z
 hartrees
Energy at 0K-476.128485
Energy at 298.15K-476.132969
HF Energy-475.612839
Nuclear repulsion energy101.461320
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/cc-pV(T+d)Z
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 3175 3024 9.96      
2 A1 1506 1435 2.95      
3 A1 1157 1102 1.38      
4 A1 1054 1004 1.49      
5 A1 660 629 19.09      
6 A2 3265 3110 0.00      
7 A2 1201 1144 0.00      
8 A2 917 873 0.00      
9 B1 3278 3122 1.65      
10 B1 971 925 3.48      
11 B1 839 799 0.28      
12 B2 3172 3022 7.66      
13 B2 1483 1412 0.56      
14 B2 1075 1024 24.97      
15 B2 704 671 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 12227.7 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 11646.9 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/cc-pV(T+d)Z
ABC
0.73949 0.36242 0.26943

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.741 -0.793
C3 0.000 -0.741 -0.793
H4 -0.914 1.246 -1.067
H5 0.914 1.246 -1.067
H6 0.914 -1.246 -1.067
H7 -0.914 -1.246 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81331.81332.47172.47172.47172.4717
C21.81331.48131.08011.08012.20422.2042
C31.81331.48132.20422.20421.08011.0801
H42.47171.08012.20421.82903.09142.4923
H52.47171.08012.20421.82902.49233.0914
H62.47172.20421.08013.09142.49231.8290
H72.47172.20421.08012.49233.09141.8290

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.892 S1 C2 H4 114.985
S1 C2 H5 114.985 S1 C3 C2 65.892
S1 C3 H6 114.985 S1 C3 H7 114.985
C2 S1 C3 48.215 C2 C3 H6 117.906
C2 C3 H7 117.906 C3 C2 H4 117.906
C3 C2 H5 117.906 H4 C2 H5 115.695
H6 C3 H7 115.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability