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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-475.553487
Energy at 298.15K-475.558082
HF Energy-475.553487
Nuclear repulsion energy101.718164
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 HF/6-31G**
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 3308 2986 15.62      
2 A1 1640 1481 5.38      
3 A1 1237 1116 5.31      
4 A1 1153 1040 0.07      
5 A1 680 614 48.47      
6 A2 3389 3059 0.00      
7 A2 1307 1180 0.00      
8 A2 990 893 0.00      
9 B1 3403 3072 7.73      
10 B1 1058 955 3.40      
11 B1 903 815 0.40      
12 B2 3301 2980 17.41      
13 B2 1603 1447 0.21      
14 B2 1211 1093 38.79      
15 B2 747 674 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 12963.8 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 11701.1 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 HF/6-31G**
ABC
0.74666 0.36321 0.27027

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.736 -0.793
C3 0.000 -0.736 -0.793
H4 -0.906 1.245 -1.068
H5 0.906 1.245 -1.068
H6 0.906 -1.245 -1.068
H7 -0.906 -1.245 -1.068

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81061.81062.46862.46862.46862.4686
C21.81061.47281.07501.07502.19642.1964
C31.81061.47282.19642.19641.07501.0750
H42.46861.07502.19641.81203.08022.4909
H52.46861.07502.19641.81202.49093.0802
H62.46862.19641.07503.08022.49091.8120
H72.46862.19641.07502.49093.08021.8120

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.001 S1 C2 H4 115.240
S1 C2 H5 115.240 S1 C3 C2 66.001
S1 C3 H6 115.240 S1 C3 H7 115.240
C2 S1 C3 47.998 C2 C3 H6 118.263
C2 C3 H7 118.263 C3 C2 H4 118.263
C3 C2 H5 118.263 H4 C2 H5 114.869
H6 C3 H7 114.869
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.014      
2 C -0.334      
3 C -0.334      
4 H 0.171      
5 H 0.171      
6 H 0.171      
7 H 0.171      


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 -2.316 2.316
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.375 0.000 0.000
y 0.000 -24.354 0.000
z 0.000 0.000 -26.547
Traceless
 xyz
x -0.925 0.000 0.000
y 0.000 2.107 0.000
z 0.000 0.000 -1.182
Polar
3z2-r2-2.363
x2-y2-2.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.976 0.000 0.000
y 0.000 4.846 0.000
z 0.000 0.000 6.301


<r2> (average value of r2) Å2
<r2> 56.057
(<r2>)1/2 7.487