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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/aug-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 CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-476.040910
Energy at 298.15K-476.045363
HF Energy-475.576563
Nuclear repulsion energy100.098544
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 CCD/aug-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 3159 3047 13.20      
2 A1 1504 1451 2.30      
3 A1 1154 1113 2.89      
4 A1 1049 1012 0.36      
5 A1 650 627 23.26      
6 A2 3246 3131 0.00      
7 A2 1198 1156 0.00      
8 A2 897 865 0.00      
9 B1 3260 3145 3.65      
10 B1 960 926 2.42      
11 B1 832 803 0.37      
12 B2 3153 3041 9.65      
13 B2 1470 1418 0.25      
14 B2 1070 1032 21.09      
15 B2 674 650 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 12138.2 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 11707.3 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 CCD/aug-cc-pVDZ
ABC
0.72539 0.35094 0.26187

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.876
C2 0.000 0.747 -0.808
C3 0.000 -0.747 -0.808
H4 -0.925 1.261 -1.081
H5 0.925 1.261 -1.081
H6 0.925 -1.261 -1.081
H7 -0.925 -1.261 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84161.84162.50482.50482.50482.5048
C21.84161.49321.09331.09332.22742.2274
C31.84161.49322.22742.22741.09331.0933
H42.50481.09332.22741.85043.12812.5222
H52.50481.09332.22741.85042.52223.1281
H62.50482.22741.09333.12812.52221.8504
H72.50482.22741.09332.52223.12811.8504

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.083 S1 C2 H4 114.777
S1 C2 H5 114.777 S1 C3 C2 66.083
S1 C3 H6 114.777 S1 C3 H7 114.777
C2 S1 C3 47.833 C2 C3 H6 118.073
C2 C3 H7 118.073 C3 C2 H4 118.073
C3 C2 H5 118.073 H4 C2 H5 115.616
H6 C3 H7 115.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability