return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2=FULL/daug-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 MP2=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-476.216554
Energy at 298.15K-476.221014
HF Energy-475.612334
Nuclear repulsion energy101.618324
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/daug-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 3188 3188 10.10      
2 A1 1512 1512 2.19      
3 A1 1162 1162 1.51      
4 A1 1047 1047 1.32      
5 A1 664 664 19.27      
6 A2 3254 3254 0.00      
7 A2 1203 1203 0.00      
8 A2 899 899 0.00      
9 B1 3269 3269 0.36      
10 B1 963 963 3.00      
11 B1 833 833 0.68      
12 B2 3184 3184 5.11      
13 B2 1480 1480 1.10      
14 B2 1049 1049 20.94      
15 B2 702 702 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 12203.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12203.3 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/daug-cc-pVTZ
ABC
0.74508 0.36242 0.27008

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.737 -0.794
C3 0.000 -0.737 -0.794
H4 -0.913 1.241 -1.063
H5 0.913 1.241 -1.063
H6 0.913 -1.241 -1.063
H7 -0.913 -1.241 -1.063

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81291.81292.46592.46592.46592.4659
C21.81291.47491.07711.07712.19582.1958
C31.81291.47492.19582.19581.07711.0771
H42.46591.07712.19581.82643.08212.4826
H52.46591.07712.19581.82642.48263.0821
H62.46592.19581.07713.08212.48261.8264
H72.46592.19581.07712.48263.08211.8264

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.998 S1 C2 H4 114.728
S1 C2 H5 114.728 S1 C3 C2 65.998
S1 C3 H6 114.728 S1 C3 H7 114.728
C2 S1 C3 48.004 C2 C3 H6 117.892
C2 C3 H7 117.892 C3 C2 H4 117.892
C3 C2 H5 117.892 H4 C2 H5 115.957
H6 C3 H7 115.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability