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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-475.995874
Energy at 298.15K-476.000351
HF Energy-475.570461
Nuclear repulsion energy100.604729
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-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 3181 3023 8.91      
2 A1 1501 1426 2.93      
3 A1 1169 1111 2.40      
4 A1 1054 1002 0.86      
5 A1 671 638 18.15      
6 A2 3276 3113 0.00      
7 A2 1194 1135 0.00      
8 A2 906 861 0.00      
9 B1 3289 3126 3.91      
10 B1 965 917 4.29      
11 B1 838 797 0.20      
12 B2 3177 3019 8.98      
13 B2 1468 1395 0.37      
14 B2 1069 1016 26.17      
15 B2 698 664 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 12227.2 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 11620.7 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-pVDZ
ABC
0.72907 0.35595 0.26507

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.870
C2 0.000 0.744 -0.799
C3 0.000 -0.744 -0.799
H4 -0.924 1.258 -1.080
H5 0.924 1.258 -1.080
H6 0.924 -1.258 -1.080
H7 -0.924 -1.258 -1.080

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82751.82752.49792.49792.49792.4979
C21.82751.48861.09411.09412.22342.2234
C31.82751.48862.22342.22341.09411.0941
H42.49791.09412.22341.84813.12252.5168
H52.49791.09412.22341.84812.51683.1225
H62.49792.22341.09413.12252.51681.8481
H72.49792.22341.09412.51683.12251.8481

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.965 S1 C2 H4 115.204
S1 C2 H5 115.204 S1 C3 C2 65.965
S1 C3 H6 115.204 S1 C3 H7 115.204
C2 S1 C3 48.070 C2 C3 H6 118.027
C2 C3 H7 118.027 C3 C2 H4 118.027
C3 C2 H5 118.027 H4 C2 H5 115.252
H6 C3 H7 115.252
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability