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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-476.015746
Energy at 298.15K-476.020229
HF Energy-475.570173
Nuclear repulsion energy100.415634
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 CCD/cc-pVDZ
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 3167 3029 10.29      
2 A1 1510 1444 2.72      
3 A1 1165 1115 3.19      
4 A1 1060 1014 0.40      
5 A1 672 643 20.22      
6 A2 3252 3111 0.00      
7 A2 1201 1149 0.00      
8 A2 906 867 0.00      
9 B1 3265 3124 7.26      
10 B1 970 928 3.57      
11 B1 840 804 0.13      
12 B2 3161 3024 12.11      
13 B2 1474 1410 0.19      
14 B2 1085 1038 25.47      
15 B2 699 669 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 12213.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11684.2 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 CCD/cc-pVDZ
ABC
0.72523 0.35499 0.26405

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.747 -0.800
C3 0.000 -0.747 -0.800
H4 -0.924 1.262 -1.085
H5 0.924 1.262 -1.085
H6 0.924 -1.262 -1.085
H7 -0.924 -1.262 -1.085

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82991.82992.50472.50472.50472.5047
C21.82991.49351.09601.09602.22932.2293
C31.82991.49352.22932.22931.09601.0960
H42.50471.09602.22931.84873.12802.5233
H52.50471.09602.22931.84872.52333.1280
H62.50472.22931.09603.12802.52331.8487
H72.50472.22931.09602.52333.12801.8487

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.915 S1 C2 H4 115.453
S1 C2 H5 115.453 S1 C3 C2 65.915
S1 C3 H6 115.453 S1 C3 H7 115.453
C2 S1 C3 48.169 C2 C3 H6 118.020
C2 C3 H7 118.020 C3 C2 H4 118.020
C3 C2 H5 118.020 H4 C2 H5 115.000
H6 C3 H7 115.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability