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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4=FULL/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-476.379329
Energy at 298.15K-476.383778
HF Energy-475.607380
Nuclear repulsion energy101.172399
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/Def2TZVPP
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 3145 3145        
2 A1 1506 1506        
3 A1 1141 1141        
4 A1 1049 1049        
5 A1 641 641        
6 A2 3227 3227        
7 A2 1195 1195        
8 A2 910 910        
9 B1 3243 3243        
10 B1 966 966        
11 B1 837 837        
12 B2 3139 3139        
13 B2 1482 1482        
14 B2 1074 1074        
15 B2 682 682        

Unscaled Zero Point Vibrational Energy (zpe) 12118.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12118.8 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/Def2TZVPP
ABC
0.73709 0.35967 0.26756

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.742 -0.797
C3 0.000 -0.742 -0.797
H4 -0.914 1.248 -1.072
H5 0.914 1.248 -1.072
H6 0.914 -1.248 -1.072
H7 -0.914 -1.248 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82021.82022.47882.47882.47882.4788
C21.82021.48481.08001.08002.20712.2071
C31.82021.48482.20712.20711.08001.0800
H42.47881.08002.20711.82813.09322.4952
H52.47881.08002.20711.82812.49523.0932
H62.47882.20711.08003.09322.49521.8281
H72.47882.20711.08002.49523.09321.8281

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.929 S1 C2 H4 115.054
S1 C2 H5 115.054 S1 C3 C2 65.929
S1 C3 H6 115.054 S1 C3 H7 115.054
C2 S1 C3 48.143 C2 C3 H6 117.890
C2 C3 H7 117.890 C3 C2 H4 117.890
C3 C2 H5 117.890 H4 C2 H5 115.625
H6 C3 H7 115.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability