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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-476.076070
Energy at 298.15K-476.080470
HF Energy-475.576103
Nuclear repulsion energy99.696466
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/aug-cc-pVDZ
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 3135 3041        
2 A1 1484 1440        
3 A1 1135 1101        
4 A1 1031 1000        
5 A1 622 604        
6 A2 3222 3126        
7 A2 1184 1149        
8 A2 880 854        
9 B1 3237 3140        
10 B1 942 914        
11 B1 822 798        
12 B2 3129 3036        
13 B2 1451 1408        
14 B2 1044 1012        
15 B2 641 622        

Unscaled Zero Point Vibrational Energy (zpe) 11980.4 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 11622.2 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
0.72289 0.34697 0.25945

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.881
C2 0.000 0.748 -0.813
C3 0.000 -0.748 -0.813
H4 -0.927 1.263 -1.084
H5 0.927 1.263 -1.084
H6 0.927 -1.263 -1.084
H7 -0.927 -1.263 -1.084

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.85211.85212.51292.51292.51292.5129
C21.85211.49571.09451.09452.23082.2308
C31.85211.49572.23082.23081.09451.0945
H42.51291.09452.23081.85423.13372.5262
H52.51291.09452.23081.85422.52623.1337
H62.51292.23081.09453.13372.52621.8542
H72.51292.23081.09452.52623.13371.8542

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.184 S1 C2 H4 114.579
S1 C2 H5 114.579 S1 C3 C2 66.184
S1 C3 H6 114.579 S1 C3 H7 114.579
C2 S1 C3 47.632 C2 C3 H6 118.082
C2 C3 H7 118.082 C3 C2 H4 118.082
C3 C2 H5 118.082 H4 C2 H5 115.779
H6 C3 H7 115.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability