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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-476.831905
Energy at 298.15K-476.836384
HF Energy-476.831905
Nuclear repulsion energy101.572681
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 mPW1PW91/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 3147 3019 14.88      
2 A1 1497 1436 2.86      
3 A1 1161 1114 1.43      
4 A1 1048 1006 0.96      
5 A1 661 634 24.30      
6 A2 3228 3096 0.00      
7 A2 1198 1149 0.00      
8 A2 905 869 0.00      
9 B1 3242 3110 4.10      
10 B1 964 925 3.77      
11 B1 838 804 0.55      
12 B2 3146 3017 13.03      
13 B2 1472 1412 1.09      
14 B2 1081 1037 25.34      
15 B2 706 677 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 12146.6 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 11651.0 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 mPW1PW91/cc-pVTZ
ABC
0.74236 0.36302 0.27001

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.738 -0.792
C3 0.000 -0.738 -0.792
H4 -0.912 1.249 -1.068
H5 0.912 1.249 -1.068
H6 0.912 -1.249 -1.068
H7 -0.912 -1.249 -1.068

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81061.81062.47282.47282.47282.4728
C21.81061.47561.08161.08162.20362.2036
C31.81061.47562.20362.20361.08161.0816
H42.47281.08162.20361.82473.09352.4980
H52.47281.08162.20361.82472.49803.0935
H62.47282.20361.08163.09352.49801.8247
H72.47282.20361.08162.49803.09351.8247

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.954 S1 C2 H4 115.181
S1 C2 H5 115.181 S1 C3 C2 65.954
S1 C3 H6 115.181 S1 C3 H7 115.181
C2 S1 C3 48.092 C2 C3 H6 118.207
C2 C3 H7 118.207 C3 C2 H4 118.207
C3 C2 H5 118.207 H4 C2 H5 115.032
H6 C3 H7 115.032
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.150      
2 C -0.158      
3 C -0.158      
4 H 0.116      
5 H 0.116      
6 H 0.116      
7 H 0.116      


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 -1.948 1.948
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.946 0.000 0.000
y 0.000 -24.314 0.000
z 0.000 0.000 -26.158
Traceless
 xyz
x -0.710 0.000 0.000
y 0.000 1.738 0.000
z 0.000 0.000 -1.028
Polar
3z2-r2-2.056
x2-y2-1.632
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.616 0.000 0.000
y 0.000 5.629 0.000
z 0.000 0.000 7.024


<r2> (average value of r2) Å2
<r2> 55.974
(<r2>)1/2 7.482