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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-476.377951
Energy at 298.15K-476.382403
HF Energy-475.607411
Nuclear repulsion energy101.216237
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 QCISD(T)=FULL/Def2TZVPP
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 3147 3147        
2 A1 1510 1510        
3 A1 1142 1142        
4 A1 1051 1051        
5 A1 642 642        
6 A2 3226 3226        
7 A2 1198 1198        
8 A2 910 910        
9 B1 3243 3243        
10 B1 968 968        
11 B1 839 839        
12 B2 3140 3140        
13 B2 1485 1485        
14 B2 1078 1078        
15 B2 682 682        

Unscaled Zero Point Vibrational Energy (zpe) 12129.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12129.8 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 QCISD(T)=FULL/Def2TZVPP
ABC
0.73676 0.36030 0.26784

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.743 -0.796
C3 0.000 -0.743 -0.796
H4 -0.914 1.248 -1.072
H5 0.914 1.248 -1.072
H6 0.914 -1.248 -1.072
H7 -0.914 -1.248 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81871.81872.47812.47812.47812.4781
C21.81871.48561.07971.07972.20742.2074
C31.81871.48562.20742.20741.07971.0797
H42.47811.07972.20741.82713.09252.4951
H52.47811.07972.20741.82712.49513.0925
H62.47812.20741.07973.09252.49511.8271
H72.47812.20741.07972.49513.09251.8271

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.895 S1 C2 H4 115.125
S1 C2 H5 115.125 S1 C3 C2 65.895
S1 C3 H6 115.125 S1 C3 H7 115.125
C2 S1 C3 48.211 C2 C3 H6 117.871
C2 C3 H7 117.871 C3 C2 H4 117.871
C3 C2 H5 117.871 H4 C2 H5 115.585
H6 C3 H7 115.585
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability