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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2=FULL/6-311G*

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/6-311G*
 hartrees
Energy at 0K-476.145953
Energy at 298.15K-476.150473
HF Energy-475.582860
Nuclear repulsion energy101.312094
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/6-311G*
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 3178 3010 11.22      
2 A1 1540 1459 3.78      
3 A1 1181 1118 2.65      
4 A1 1094 1036 1.11      
5 A1 676 640 20.77      
6 A2 3270 3097 0.00      
7 A2 1220 1156 0.00      
8 A2 954 903 0.00      
9 B1 3283 3109 4.75      
10 B1 1006 952 11.75      
11 B1 866 820 0.43      
12 B2 3175 3007 8.93      
13 B2 1510 1430 1.10      
14 B2 1123 1063 48.92      
15 B2 705 668 1.85      

Unscaled Zero Point Vibrational Energy (zpe) 12389.6 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 11734.2 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 MP2=FULL/6-311G*
ABC
0.73777 0.36136 0.26873

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.741 -0.793
C3 0.000 -0.741 -0.793
H4 -0.916 1.248 -1.073
H5 0.916 1.248 -1.073
H6 0.916 -1.248 -1.073
H7 -0.916 -1.248 -1.073

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81461.81462.47962.47962.47962.4796
C21.81461.48231.08411.08412.20812.2081
C31.81461.48232.20812.20811.08411.0841
H42.47961.08412.20811.83263.09682.4964
H52.47961.08412.20811.83262.49643.0968
H62.47962.20811.08413.09682.49641.8326
H72.47962.20811.08412.49643.09681.8326

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.892 S1 C2 H4 115.284
S1 C2 H5 115.284 S1 C3 C2 65.892
S1 C3 H6 115.284 S1 C3 H7 115.284
C2 S1 C3 48.216 C2 C3 H6 117.885
C2 C3 H7 117.885 C3 C2 H4 117.885
C3 C2 H5 117.885 H4 C2 H5 115.387
H6 C3 H7 115.387
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability