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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-476.440758
Energy at 298.15K-476.445081
HF Energy-476.440758
Nuclear repulsion energy97.392274
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 PBEPBE/6-31G
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 3109 3066 5.70      
2 A1 1484 1464 2.89      
3 A1 1137 1121 2.22      
4 A1 1043 1029 3.59      
5 A1 583 575 20.28      
6 A2 3197 3153 0.00      
7 A2 1186 1170 0.00      
8 A2 865 853 0.00      
9 B1 3215 3171 6.93      
10 B1 905 892 6.50      
11 B1 837 825 1.31      
12 B2 3106 3063 7.56      
13 B2 1467 1446 4.41      
14 B2 1063 1048 41.60      
15 B2 583 575 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 11888.8 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 11724.8 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 PBEPBE/6-31G
ABC
0.72611 0.31947 0.24389

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.920
C2 0.000 0.744 -0.856
C3 0.000 -0.744 -0.856
H4 -0.923 1.270 -1.113
H5 0.923 1.270 -1.113
H6 0.923 -1.270 -1.113
H7 -0.923 -1.270 -1.113

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.92581.92582.56852.56852.56852.5685
C21.92581.48771.09281.09282.23032.2303
C31.92581.48772.23032.23031.09281.0928
H42.56851.09282.23031.84523.14012.5408
H52.56851.09282.23031.84522.54083.1401
H62.56852.23031.09283.14012.54081.8452
H72.56852.23031.09282.54083.14011.8452

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.279 S1 C2 H4 113.735
S1 C2 H5 113.735 S1 C3 C2 67.279
S1 C3 H6 113.735 S1 C3 H7 113.735
C2 S1 C3 45.441 C2 C3 H6 118.809
C2 C3 H7 118.809 C3 C2 H4 118.809
C3 C2 H5 118.809 H4 C2 H5 115.183
H6 C3 H7 115.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.092      
2 C -0.459      
3 C -0.459      
4 H 0.207      
5 H 0.207      
6 H 0.207      
7 H 0.207      


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 -2.427 2.427
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.227 0.000 0.000
y 0.000 -24.274 0.000
z 0.000 0.000 -26.519
Traceless
 xyz
x -0.831 0.000 0.000
y 0.000 2.099 0.000
z 0.000 0.000 -1.268
Polar
3z2-r2-2.536
x2-y2-1.953
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.801 0.000 0.000
y 0.000 4.827 0.000
z 0.000 0.000 6.676


<r2> (average value of r2) Å2
<r2> 59.831
(<r2>)1/2 7.735