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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/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 HF/aug-cc-pVTZ
 hartrees
Energy at 0K-475.612334
Energy at 298.15K-475.616917
HF Energy-475.612334
Nuclear repulsion energy101.811629
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/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 3280 2986 19.55      
2 A1 1625 1479 3.17      
3 A1 1218 1109 2.41      
4 A1 1139 1037 0.19      
5 A1 662 603 45.70      
6 A2 3356 3055 0.00      
7 A2 1300 1184 0.00      
8 A2 975 887 0.00      
9 B1 3372 3070 4.91      
10 B1 1042 949 2.29      
11 B1 893 813 0.64      
12 B2 3274 2981 14.98      
13 B2 1592 1450 0.57      
14 B2 1199 1091 26.13      
15 B2 737 671 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 12832.2 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 11682.4 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/aug-cc-pVTZ
ABC
0.74813 0.36376 0.27067

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-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 0.736 -0.792
C3 0.000 -0.736 -0.792
H4 -0.904 1.243 -1.066
H5 0.904 1.243 -1.066
H6 0.904 -1.243 -1.066
H7 -0.904 -1.243 -1.066

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80961.80962.46512.46512.46512.4651
C21.80961.47211.07251.07252.19342.1934
C31.80961.47212.19342.19341.07251.0725
H42.46511.07252.19341.80883.07502.4868
H52.46511.07252.19341.80882.48683.0750
H62.46512.19341.07253.07502.48681.8088
H72.46512.19341.07252.48683.07501.8088

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.999 S1 C2 H4 115.186
S1 C2 H5 115.186 S1 C3 C2 65.999
S1 C3 H6 115.186 S1 C3 H7 115.186
C2 S1 C3 48.002 C2 C3 H6 118.231
C2 C3 H7 118.231 C3 C2 H4 118.231
C3 C2 H5 118.231 H4 C2 H5 114.975
H6 C3 H7 114.975
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.122      
2 C -0.639      
3 C -0.639      
4 H 0.350      
5 H 0.350      
6 H 0.350      
7 H 0.350      


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 -2.195 2.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.488 0.000 0.000
y 0.000 -24.523 0.000
z 0.000 0.000 -26.632
Traceless
 xyz
x -0.911 0.000 0.000
y 0.000 2.037 0.000
z 0.000 0.000 -1.126
Polar
3z2-r2-2.253
x2-y2-1.965
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.467 0.000 0.000
y 0.000 6.046 0.000
z 0.000 0.000 7.532


<r2> (average value of r2) Å2
<r2> 56.058
(<r2>)1/2 7.487