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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3LYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/3-21G*
 hartrees
Energy at 0K-474.498385
Energy at 298.15K-474.502800
HF Energy-474.498385
Nuclear repulsion energy100.025303
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 B3LYP/3-21G*
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 3157 3037 8.28      
2 A1 1532 1474 3.86      
3 A1 1121 1078 0.03      
4 A1 1060 1020 4.71      
5 A1 597 574 22.80      
6 A2 3235 3112 0.00      
7 A2 1218 1172 0.00      
8 A2 899 865 0.00      
9 B1 3253 3129 4.45      
10 B1 973 936 5.36      
11 B1 867 834 1.80      
12 B2 3155 3035 8.84      
13 B2 1520 1462 2.53      
14 B2 1117 1075 43.57      
15 B2 647 622 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 12174.7 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 11712.0 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 B3LYP/3-21G*
ABC
0.72689 0.34930 0.26061

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.879
C2 0.000 -0.749 -0.809
C3 0.000 0.749 -0.809
H4 0.916 -1.256 -1.089
H5 -0.916 -1.256 -1.089
H6 -0.916 1.256 -1.089
H7 0.916 1.256 -1.089

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84641.84642.50802.50802.50802.5080
C21.84641.49711.08421.08422.22172.2217
C31.84641.49712.22172.22171.08421.0842
H42.50801.08422.22171.83263.10932.5118
H52.50801.08422.22171.83262.51183.1093
H62.50802.22171.08423.10932.51181.8326
H72.50802.22171.08422.51183.10931.8326

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.082 S1 C2 H4 115.214
S1 C2 H5 115.214 S1 C3 C2 66.082
S1 C3 H6 115.214 S1 C3 H7 115.214
C2 S1 C3 47.835 C2 C3 H6 117.900
C2 C3 H7 117.900 C3 C2 H4 117.900
C3 C2 H5 117.900 H4 C2 H5 115.368
H6 C3 H7 115.368
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.070      
2 C -0.506      
3 C -0.506      
4 H 0.236      
5 H 0.236      
6 H 0.236      
7 H 0.236      


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 -2.011 2.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.181 0.000 0.000
y 0.000 -24.357 0.000
z 0.000 0.000 -26.310
Traceless
 xyz
x -0.848 0.000 0.000
y 0.000 1.889 0.000
z 0.000 0.000 -1.041
Polar
3z2-r2-2.083
x2-y2-1.825
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.691 0.000 0.000
y 0.000 4.644 0.000
z 0.000 0.000 6.035


<r2> (average value of r2) Å2
<r2> 57.348
(<r2>)1/2 7.573