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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4=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 MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-476.251147
Energy at 298.15K-476.255610
HF Energy-475.610907
Nuclear repulsion energy101.169599
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 MP4=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 3163 3046        
2 A1 1508 1453        
3 A1 1149 1107        
4 A1 1055 1016        
5 A1 645 621        
6 A2 3228 3108        
7 A2 1202 1158        
8 A2 907 874        
9 B1 3242 3122        
10 B1 966 930        
11 B1 836 805        
12 B2 3160 3042        
13 B2 1485 1430        
14 B2 1079 1039        
15 B2 685 659        

Unscaled Zero Point Vibrational Energy (zpe) 12155.0 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 11704.0 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 MP4=FULL/cc-pVTZ
ABC
0.74028 0.35856 0.26728

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.740 -0.799
C3 0.000 -0.740 -0.799
H4 -0.913 1.246 -1.071
H5 0.913 1.246 -1.071
H6 0.913 -1.246 -1.071
H7 -0.913 -1.246 -1.071

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82271.82272.47762.47762.47762.4776
C21.82271.48091.07801.07802.20272.2027
C31.82271.48092.20272.20271.07801.0780
H42.47761.07802.20271.82513.08842.4914
H52.47761.07802.20271.82512.49143.0884
H62.47762.20271.07803.08842.49141.8251
H72.47762.20271.07802.49143.08841.8251

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.031 S1 C2 H4 114.896
S1 C2 H5 114.896 S1 C3 C2 66.031
S1 C3 H6 114.896 S1 C3 H7 114.896
C2 S1 C3 47.938 C2 C3 H6 117.950
C2 C3 H7 117.950 C3 C2 H4 117.950
C3 C2 H5 117.950 H4 C2 H5 115.676
H6 C3 H7 115.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability