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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD=FULL/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 CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-476.119426
Energy at 298.15K-476.123930
HF Energy-475.564691
Nuclear repulsion energy101.483305
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 CCSD=FULL/6-31G(2df,p)
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 3200 3013 9.00      
2 A1 1529 1440 4.40      
3 A1 1174 1105 2.01      
4 A1 1072 1009 0.15      
5 A1 671 632 23.79      
6 A2 3282 3090 0.00      
7 A2 1224 1153 0.00      
8 A2 922 868 0.00      
9 B1 3296 3103 1.73      
10 B1 986 928 3.57      
11 B1 853 803 0.48      
12 B2 3195 3009 7.76      
13 B2 1501 1413 0.26      
14 B2 1104 1040 26.72      
15 B2 716 674 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 12362.1 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 11640.2 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 CCSD=FULL/6-31G(2df,p)
ABC
0.73863 0.36309 0.26954

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.740 -0.792
C3 0.000 -0.740 -0.792
H4 -0.912 1.250 -1.071
H5 0.912 1.250 -1.071
H6 0.912 -1.250 -1.071
H7 -0.912 -1.250 -1.071

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81161.81162.47582.47582.47582.4758
C21.81161.48091.08141.08142.20722.2072
C31.81161.48092.20722.20721.08141.0814
H42.47581.08142.20721.82413.09482.5001
H52.47581.08142.20721.82412.50013.0948
H62.47582.20721.08143.09482.50011.8241
H72.47582.20721.08142.50013.09481.8241

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.875 S1 C2 H4 115.360
S1 C2 H5 115.360 S1 C3 C2 65.875
S1 C3 H6 115.360 S1 C3 H7 115.360
C2 S1 C3 48.250 C2 C3 H6 118.112
C2 C3 H7 118.112 C3 C2 H4 118.112
C3 C2 H5 118.112 H4 C2 H5 114.994
H6 C3 H7 114.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability