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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B1B95/aug-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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-476.801818
Energy at 298.15K-476.806285
HF Energy-476.801818
Nuclear repulsion energy101.214691
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 B1B95/aug-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 3160 3027 15.80      
2 A1 1485 1422 2.09      
3 A1 1169 1120 1.52      
4 A1 1035 992 0.67      
5 A1 667 639 24.52      
6 A2 3251 3114 0.00      
7 A2 1182 1133 0.00      
8 A2 895 857 0.00      
9 B1 3264 3127 3.00      
10 B1 955 915 3.00      
11 B1 826 791 0.62      
12 B2 3157 3024 11.14      
13 B2 1452 1391 1.00      
14 B2 1054 1010 21.88      
15 B2 703 673 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 12126.9 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 11616.3 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 B1B95/aug-cc-pVDZ
ABC
0.73846 0.36010 0.26827

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.864
C2 0.000 0.739 -0.796
C3 0.000 -0.739 -0.796
H4 -0.919 1.253 -1.070
H5 0.919 1.253 -1.070
H6 0.919 -1.253 -1.070
H7 -0.919 -1.253 -1.070

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81741.81742.48062.48062.48062.4806
C21.81741.47761.08751.08752.21022.2102
C31.81741.47762.21022.21021.08751.0875
H42.48061.08752.21021.83723.10692.5054
H52.48061.08752.21021.83722.50543.1069
H62.48062.21021.08753.10692.50541.8372
H72.48062.21021.08752.50543.10691.8372

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.014 S1 C2 H4 114.951
S1 C2 H5 114.951 S1 C3 C2 66.014
S1 C3 H6 114.951 S1 C3 H7 114.951
C2 S1 C3 47.973 C2 C3 H6 118.200
C2 C3 H7 118.200 C3 C2 H4 118.200
C3 C2 H5 118.200 H4 C2 H5 115.273
H6 C3 H7 115.273
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.080      
2 C 0.785      
3 C 0.785      
4 H -0.412      
5 H -0.412      
6 H -0.412      
7 H -0.412      


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 -1.962 1.962
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.233 0.000 0.000
y 0.000 -24.457 0.000
z 0.000 0.000 -26.378
Traceless
 xyz
x -0.816 0.000 0.000
y 0.000 1.848 0.000
z 0.000 0.000 -1.032
Polar
3z2-r2-2.065
x2-y2-1.776
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.631 0.000 0.000
y 0.000 6.212 0.000
z 0.000 0.000 7.680


<r2> (average value of r2) Å2
<r2> 56.382
(<r2>)1/2 7.509