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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-476.193674
Energy at 298.15K-476.198172
HF Energy-475.611090
Nuclear repulsion energy101.685687
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=FULL/cc-pVTZ
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 3193 3032 9.59      
2 A1 1515 1438 2.69      
3 A1 1168 1109 1.50      
4 A1 1062 1009 1.60      
5 A1 668 634 18.58      
6 A2 3266 3101 0.00      
7 A2 1207 1146 0.00      
8 A2 919 873 0.00      
9 B1 3280 3114 1.34      
10 B1 976 927 3.50      
11 B1 844 801 0.32      
12 B2 3190 3029 7.19      
13 B2 1492 1416 0.75      
14 B2 1085 1030 25.17      
15 B2 711 675 1.09      

Unscaled Zero Point Vibrational Energy (zpe) 12287.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 11666.1 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=FULL/cc-pVTZ
ABC
0.74510 0.36321 0.27042

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.737 -0.793
C3 0.000 -0.737 -0.793
H4 -0.910 1.243 -1.066
H5 0.910 1.243 -1.066
H6 0.910 -1.243 -1.066
H7 -0.910 -1.243 -1.066

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81061.81062.46692.46692.46692.4669
C21.81061.47441.07631.07632.19662.1966
C31.81061.47442.19662.19661.07631.0763
H42.46691.07632.19661.81963.08152.4869
H52.46691.07632.19661.81962.48693.0815
H62.46692.19661.07633.08152.48691.8196
H72.46692.19661.07632.48693.08151.8196

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.973 S1 C2 H4 115.025
S1 C2 H5 115.025 S1 C3 C2 65.973
S1 C3 H6 115.025 S1 C3 H7 115.025
C2 S1 C3 48.053 C2 C3 H6 118.057
C2 C3 H7 118.057 C3 C2 H4 118.057
C3 C2 H5 118.057 H4 C2 H5 115.407
H6 C3 H7 115.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability