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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-475.571055
Energy at 298.15K-475.575627
HF Energy-475.571055
Nuclear repulsion energy101.266356
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/cc-pVDZ
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 3295 2992 14.14      
2 A1 1608 1460 2.78      
3 A1 1225 1112 3.92      
4 A1 1133 1028 0.07      
5 A1 671 610 45.68      
6 A2 3380 3069 0.00      
7 A2 1288 1170 0.00      
8 A2 961 873 0.00      
9 B1 3395 3083 6.67      
10 B1 1031 936 3.65      
11 B1 890 808 0.35      
12 B2 3287 2985 16.29      
13 B2 1566 1422 0.67      
14 B2 1176 1068 31.27      
15 B2 730 663 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 12818.0 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 11638.7 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 HF/cc-pVDZ
ABC
0.74325 0.35909 0.26794

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.866
C2 0.000 0.737 -0.798
C3 0.000 -0.737 -0.798
H4 -0.912 1.250 -1.072
H5 0.912 1.250 -1.072
H6 0.912 -1.250 -1.072
H7 -0.912 -1.250 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81961.81962.48022.48022.48022.4802
C21.81961.47341.08231.08232.20352.2035
C31.81961.47342.20352.20351.08231.0823
H42.48021.08232.20351.82483.09542.5003
H52.48021.08232.20351.82482.50033.0954
H62.48022.20351.08233.09542.50031.8248
H72.48022.20351.08232.50033.09541.8248

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.118 S1 C2 H4 115.077
S1 C2 H5 115.077 S1 C3 C2 66.118
S1 C3 H6 115.077 S1 C3 H7 115.077
C2 S1 C3 47.765 C2 C3 H6 118.323
C2 C3 H7 118.323 C3 C2 H4 118.323
C3 C2 H5 118.323 H4 C2 H5 114.919
H6 C3 H7 114.919
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.149      
2 C -0.088      
3 C -0.088      
4 H 0.081      
5 H 0.081      
6 H 0.081      
7 H 0.081      


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 -2.201 2.201
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.227 0.000 0.000
y 0.000 -24.528 0.000
z 0.000 0.000 -26.439
Traceless
 xyz
x -0.743 0.000 0.000
y 0.000 1.805 0.000
z 0.000 0.000 -1.062
Polar
3z2-r2-2.124
x2-y2-1.699
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.818 0.000 0.000
y 0.000 4.984 0.000
z 0.000 0.000 6.455


<r2> (average value of r2) Å2
<r2> 56.400
(<r2>)1/2 7.510