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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/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 B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-476.553003
Energy at 298.15K-476.557440
HF Energy-476.415471
Nuclear repulsion energy100.357071
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 B2PLYP/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 3150 3016 11.19      
2 A1 1490 1427 3.12      
3 A1 1156 1107 2.89      
4 A1 1045 1000 0.28      
5 A1 643 616 23.47      
6 A2 3238 3101 0.00      
7 A2 1193 1142 0.00      
8 A2 893 856 0.00      
9 B1 3252 3115 5.87      
10 B1 952 912 4.46      
11 B1 834 799 0.32      
12 B2 3146 3013 12.42      
13 B2 1458 1396 0.39      
14 B2 1062 1017 26.60      
15 B2 670 642 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 12090.9 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 11579.5 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 B2PLYP/cc-pVDZ
ABC
0.73181 0.35211 0.26316

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.875
C2 0.000 0.742 -0.806
C3 0.000 -0.742 -0.806
H4 -0.922 1.260 -1.082
H5 0.922 1.260 -1.082
H6 0.922 -1.260 -1.082
H7 -0.922 -1.260 -1.082

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83671.83672.50302.50302.50302.5030
C21.83671.48401.09291.09292.22102.2210
C31.83671.48402.22102.22101.09291.0929
H42.50301.09292.22101.84403.12192.5192
H52.50301.09292.22101.84402.51923.1219
H62.50302.22101.09293.12192.51921.8440
H72.50302.22101.09292.51923.12191.8440

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.174 S1 C2 H4 115.005
S1 C2 H5 115.005 S1 C3 C2 66.174
S1 C3 H6 115.005 S1 C3 H7 115.005
C2 S1 C3 47.652 C2 C3 H6 118.269
C2 C3 H7 118.269 C3 C2 H4 118.269
C3 C2 H5 118.269 H4 C2 H5 115.052
H6 C3 H7 115.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.113      
2 C -0.079      
3 C -0.079      
4 H 0.068      
5 H 0.068      
6 H 0.068      
7 H 0.068      


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 -1.893 1.893
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.099 0.000 0.000
y 0.000 -24.568 0.000
z 0.000 0.000 -26.162
Traceless
 xyz
x -0.734 0.000 0.000
y 0.000 1.563 0.000
z 0.000 0.000 -0.829
Polar
3z2-r2-1.658
x2-y2-1.531
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.957 0.000 0.000
y 0.000 5.048 0.000
z 0.000 0.000 6.428


<r2> (average value of r2) Å2
<r2> 57.058
(<r2>)1/2 7.554