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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-475.605143
Energy at 298.15K-475.609727
HF Energy-475.605143
Nuclear repulsion energy102.007219
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/6-311+G(3df,2p)
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 3277 2978 19.60      
2 A1 1625 1477 3.34      
3 A1 1219 1107 2.06      
4 A1 1139 1035 0.22      
5 A1 665 605 44.59      
6 A2 3353 3047 0.00      
7 A2 1299 1181 0.00      
8 A2 974 885 0.00      
9 B1 3369 3061 4.71      
10 B1 1046 950 2.38      
11 B1 893 811 0.67      
12 B2 3271 2972 14.79      
13 B2 1592 1447 0.62      
14 B2 1200 1090 26.24      
15 B2 742 674 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 12832.8 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 11659.9 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/6-311+G(3df,2p)
ABC
0.74776 0.36628 0.27201

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.858
C2 0.000 0.736 -0.789
C3 0.000 -0.736 -0.789
H4 -0.904 1.243 -1.064
H5 0.904 1.243 -1.064
H6 0.904 -1.243 -1.064
H7 -0.904 -1.243 -1.064

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80371.80372.46132.46132.46132.4613
C21.80371.47281.07271.07272.19392.1939
C31.80371.47282.19392.19391.07271.0727
H42.46131.07272.19391.80873.07482.4866
H52.46131.07272.19391.80872.48663.0748
H62.46132.19391.07273.07482.48661.8087
H72.46132.19391.07272.48663.07481.8087

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.903 S1 C2 H4 115.301
S1 C2 H5 115.301 S1 C3 C2 65.903
S1 C3 H6 115.301 S1 C3 H7 115.301
C2 S1 C3 48.194 C2 C3 H6 118.198
C2 C3 H7 118.198 C3 C2 H4 118.198
C3 C2 H5 118.198 H4 C2 H5 114.931
H6 C3 H7 114.931
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.256      
2 C -0.135      
3 C -0.135      
4 H 0.132      
5 H 0.132      
6 H 0.132      
7 H 0.132      


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 -2.139 2.139
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.548 0.000 0.000
y 0.000 -24.497 0.000
z 0.000 0.000 -26.636
Traceless
 xyz
x -0.982 0.000 0.000
y 0.000 2.095 0.000
z 0.000 0.000 -1.113
Polar
3z2-r2-2.227
x2-y2-2.051
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.333 0.000 0.000
y 0.000 5.856 0.000
z 0.000 0.000 7.325


<r2> (average value of r2) Å2
<r2> 55.904
(<r2>)1/2 7.477