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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-471.327730
Energy at 298.15K-471.332124
HF Energy-471.327730
Nuclear repulsion energy99.422144
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 BLYP/STO-3G
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 3238 2996 0.50      
2 A1 1595 1475 3.72      
3 A1 1188 1099 0.21      
4 A1 1088 1006 0.11      
5 A1 760 703 4.47      
6 A2 3370 3118 0.00      
7 A2 1221 1129 0.00      
8 A2 941 871 0.00      
9 B1 3379 3126 7.00      
10 B1 1011 936 0.09      
11 B1 871 806 0.09      
12 B2 3236 2994 0.19      
13 B2 1582 1463 0.37      
14 B2 1137 1052 17.43      
15 B2 789 730 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 12702.3 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 11752.1 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 BLYP/STO-3G
ABC
0.69322 0.35404 0.25912

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.874
C2 0.000 0.770 -0.791
C3 0.000 -0.770 -0.791
H4 -0.923 1.283 -1.124
H5 0.923 1.283 -1.124
H6 0.923 -1.283 -1.124
H7 -0.923 -1.283 -1.124

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83401.83402.54782.54782.54782.5478
C21.83401.54061.10781.10782.27632.2763
C31.83401.54062.27632.27631.10781.1078
H42.54781.10782.27631.84693.16222.5668
H52.54781.10782.27631.84692.56683.1622
H62.54782.27631.10783.16222.56681.8469
H72.54782.27631.10782.56683.16221.8469

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.165 S1 C2 H4 117.884
S1 C2 H5 117.884 S1 C3 C2 65.165
S1 C3 H6 117.884 S1 C3 H7 117.884
C2 S1 C3 49.670 C2 C3 H6 117.592
C2 C3 H7 117.592 C3 C2 H4 117.592
C3 C2 H5 117.592 H4 C2 H5 112.939
H6 C3 H7 112.939
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.123      
2 C -0.217      
3 C -0.217      
4 H 0.078      
5 H 0.078      
6 H 0.078      
7 H 0.078      


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 -0.540 0.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.180 0.000 0.000
y 0.000 -22.605 0.000
z 0.000 0.000 -23.765
Traceless
 xyz
x 0.005 0.000 0.000
y 0.000 0.867 0.000
z 0.000 0.000 -0.872
Polar
3z2-r2-1.744
x2-y2-0.575
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.689 0.000 0.000
y 0.000 2.714 0.000
z 0.000 0.000 3.165


<r2> (average value of r2) Å2
<r2> 56.370
(<r2>)1/2 7.508