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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-476.552482
Energy at 298.15K-476.556872
HF Energy-476.552482
Nuclear repulsion energy100.663667
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 PBEPBEultrafine/aug-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 3052 3017 17.39      
2 A1 1437 1421 2.67      
3 A1 1118 1106 1.10      
4 A1 1003 992 0.94      
5 A1 631 624 20.76      
6 A2 3129 3094 0.00      
7 A2 1152 1139 0.00      
8 A2 870 860 0.00      
9 B1 3143 3108 3.66      
10 B1 923 913 3.77      
11 B1 807 798 0.55      
12 B2 3052 3018 12.14      
13 B2 1418 1402 0.98      
14 B2 1028 1016 21.34      
15 B2 666 658 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 11713.9 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 11582.7 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
0.73161 0.35573 0.26505

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.870
C2 0.000 0.743 -0.801
C3 0.000 -0.743 -0.801
H4 -0.920 1.259 -1.076
H5 0.920 1.259 -1.076
H6 0.920 -1.259 -1.076
H7 -0.920 -1.259 -1.076

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82881.82882.49402.49402.49402.4940
C21.82881.48551.09041.09042.22002.2200
C31.82881.48552.22002.22001.09041.0904
H42.49401.09042.22001.84073.11862.5173
H52.49401.09042.22001.84072.51733.1186
H62.49402.22001.09043.11862.51731.8407
H72.49402.22001.09042.51733.11861.8407

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.037 S1 C2 H4 115.016
S1 C2 H5 115.016 S1 C3 C2 66.037
S1 C3 H6 115.016 S1 C3 H7 115.016
C2 S1 C3 47.926 C2 C3 H6 118.238
C2 C3 H7 118.238 C3 C2 H4 118.238
C3 C2 H5 118.238 H4 C2 H5 115.138
H6 C3 H7 115.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.027      
2 C -0.403      
3 C -0.403      
4 H 0.208      
5 H 0.208      
6 H 0.208      
7 H 0.208      


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 -1.886 1.886
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.420 0.000 0.000
y 0.000 -24.692 0.000
z 0.000 0.000 -26.567
Traceless
 xyz
x -0.791 0.000 0.000
y 0.000 1.801 0.000
z 0.000 0.000 -1.011
Polar
3z2-r2-2.021
x2-y2-1.728
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.036 0.000 0.000
y 0.000 6.528 0.000
z 0.000 0.000 8.044


<r2> (average value of r2) Å2
<r2> 56.965
(<r2>)1/2 7.548