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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-476.171639
Energy at 298.15K-476.176115
HF Energy-475.620340
Nuclear repulsion energy101.551071
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/cc-pVQZ
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 3174 3011 9.69      
2 A1 1503 1425 2.50      
3 A1 1158 1098 1.27      
4 A1 1049 995 1.45      
5 A1 660 626 19.73      
6 A2 3268 3099 0.00      
7 A2 1201 1139 0.00      
8 A2 915 868 0.00      
9 B1 3280 3111 0.67      
10 B1 967 917 3.20      
11 B1 838 794 0.43      
12 B2 3173 3009 5.79      
13 B2 1479 1403 0.82      
14 B2 1072 1017 22.37      
15 B2 703 666 0.98      

Unscaled Zero Point Vibrational Energy (zpe) 12219.4 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 11588.9 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/cc-pVQZ
ABC
0.74233 0.36256 0.26986

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.739 -0.794
C3 0.000 -0.739 -0.794
H4 -0.914 1.245 -1.064
H5 0.914 1.245 -1.064
H6 0.914 -1.245 -1.064
H7 -0.914 -1.245 -1.064

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81281.81282.46812.46812.46812.4681
C21.81281.47721.07921.07922.20062.2006
C31.81281.47722.20062.20061.07921.0792
H42.46811.07922.20061.82833.08902.4898
H52.46811.07922.20061.82832.48983.0890
H62.46812.20061.07923.08902.48981.8283
H72.46812.20061.07922.48983.08901.8283

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.956 S1 C2 H4 114.787
S1 C2 H5 114.787 S1 C3 C2 65.956
S1 C3 H6 114.787 S1 C3 H7 114.787
C2 S1 C3 48.087 C2 C3 H6 117.980
C2 C3 H7 117.980 C3 C2 H4 117.980
C3 C2 H5 117.980 H4 C2 H5 115.786
H6 C3 H7 115.786
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability