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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: LSDA/cc-pV(T+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/cc-pV(T+d)Z
 hartrees
Energy at 0K-475.358049
Energy at 298.15K-475.362469
HF Energy-475.358049
Nuclear repulsion energy101.983786
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 LSDA/cc-pV(T+d)Z
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 3049 3018 12.18      
2 A1 1419 1405 1.76      
3 A1 1145 1133 0.94      
4 A1 992 982 2.67      
5 A1 666 659 16.98      
6 A2 3131 3099 0.00      
7 A2 1140 1128 0.00      
8 A2 864 855 0.00      
9 B1 3143 3111 0.90      
10 B1 923 914 4.97      
11 B1 805 797 0.69      
12 B2 3050 3019 8.15      
13 B2 1394 1380 3.15      
14 B2 1021 1011 27.19      
15 B2 706 698 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 11723.0 cm-1
Scaled (by 0.9899) Zero Point Vibrational Energy (zpe) 11604.6 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 LSDA/cc-pV(T+d)Z
ABC
0.74185 0.36859 0.27354

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.854
C2 0.000 0.736 -0.783
C3 0.000 -0.736 -0.783
H4 -0.920 1.250 -1.067
H5 0.920 1.250 -1.067
H6 0.920 -1.250 -1.067
H7 -0.920 -1.250 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.79481.79482.47002.47002.47002.4700
C21.79481.47241.09191.09192.20762.2076
C31.79481.47242.20762.20761.09191.0919
H42.47001.09192.20761.84103.10492.5002
H52.47001.09192.20761.84102.50023.1049
H62.47002.20761.09193.10492.50021.8410
H72.47002.20761.09192.50023.10491.8410

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.783 S1 C2 H4 115.501
S1 C2 H5 115.501 S1 C3 C2 65.783
S1 C3 H6 115.501 S1 C3 H7 115.501
C2 S1 C3 48.434 C2 C3 H6 118.078
C2 C3 H7 118.078 C3 C2 H4 118.078
C3 C2 H5 118.078 H4 C2 H5 114.921
H6 C3 H7 114.921
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.104      
2 C -0.234      
3 C -0.234      
4 H 0.143      
5 H 0.143      
6 H 0.143      
7 H 0.143      


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 -1.814 1.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.089 0.000 0.000
y 0.000 -24.571 0.000
z 0.000 0.000 -26.403
Traceless
 xyz
x -0.602 0.000 0.000
y 0.000 1.675 0.000
z 0.000 0.000 -1.073
Polar
3z2-r2-2.146
x2-y2-1.518
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.762 0.000 0.000
y 0.000 5.777 0.000
z 0.000 0.000 7.118


<r2> (average value of r2) Å2
<r2> 55.766
(<r2>)1/2 7.468