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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: TPSSh/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-471.475968
Energy at 298.15K-471.480457
HF Energy-471.475968
Nuclear repulsion energy100.579004
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 TPSSh/STO-3G
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 3355 3355 0.00      
2 A1 1647 1647 3.88      
3 A1 1248 1248 0.49      
4 A1 1135 1135 0.01      
5 A1 813 813 4.79      
6 A2 3489 3489 0.00      
7 A2 1267 1267 0.00      
8 A2 973 973 0.00      
9 B1 3497 3497 3.10      
10 B1 1050 1050 0.00      
11 B1 893 893 0.06      
12 B2 3350 3350 0.19      
13 B2 1629 1629 0.52      
14 B2 1184 1184 16.66      
15 B2 849 849 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 13189.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13189.8 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 TPSSh/STO-3G
ABC
0.70578 0.36372 0.26570

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.763 -0.779
C3 0.000 -0.763 -0.779
H4 -0.917 1.273 -1.110
H5 0.917 1.273 -1.110
H6 0.917 -1.273 -1.110
H7 -0.917 -1.273 -1.110

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80951.80952.51942.51942.51942.5194
C21.80951.52551.10041.10042.25692.2569
C31.80951.52552.25692.25691.10041.1004
H42.51941.10042.25691.83493.13762.5451
H52.51941.10042.25691.83492.54513.1376
H62.51942.25691.10043.13762.54511.8349
H72.51942.25691.10042.54513.13761.8349

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.068 S1 C2 H4 117.881
S1 C2 H5 117.881 S1 C3 C2 65.068
S1 C3 H6 117.881 S1 C3 H7 117.881
C2 S1 C3 49.863 C2 C3 H6 117.598
C2 C3 H7 117.598 C3 C2 H4 117.598
C3 C2 H5 117.598 H4 C2 H5 112.976
H6 C3 H7 112.976
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.115      
2 C -0.213      
3 C -0.213      
4 H 0.078      
5 H 0.078      
6 H 0.078      
7 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.658 0.658
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.656 0.000 0.000
y 0.000 2.640 0.000
z 0.000 0.000 3.048


<r2> (average value of r2) Å2
<r2> 55.438
(<r2>)1/2 7.446