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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pV(T+d)Z
 hartrees
Energy at 0K-476.835166
Energy at 298.15K-476.839648
HF Energy-476.835166
Nuclear repulsion energy101.775536
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 mPW1PW91/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 3146 3013 15.48      
2 A1 1496 1433 3.00      
3 A1 1159 1110 1.19      
4 A1 1047 1003 1.03      
5 A1 662 634 23.84      
6 A2 3226 3090 0.00      
7 A2 1196 1146 0.00      
8 A2 906 868 0.00      
9 B1 3240 3104 4.27      
10 B1 966 926 3.87      
11 B1 838 802 0.53      
12 B2 3144 3012 13.40      
13 B2 1472 1410 1.00      
14 B2 1081 1035 25.34      
15 B2 711 681 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 12144.8 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 11633.6 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 mPW1PW91/cc-pV(T+d)Z
ABC
0.74157 0.36575 0.27141

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pV(T+d)Z

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.858
C2 0.000 0.739 -0.788
C3 0.000 -0.739 -0.788
H4 -0.912 1.249 -1.067
H5 0.912 1.249 -1.067
H6 0.912 -1.249 -1.067
H7 -0.912 -1.249 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80431.80432.46892.46892.46892.4689
C21.80431.47721.08171.08172.20432.2043
C31.80431.47722.20432.20431.08171.0817
H42.46891.08172.20431.82473.09282.4972
H52.46891.08172.20431.82472.49723.0928
H62.46892.20431.08173.09282.49721.8247
H72.46892.20431.08172.49723.09281.8247

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.836 S1 C2 H4 115.331
S1 C2 H5 115.331 S1 C3 C2 65.836
S1 C3 H6 115.331 S1 C3 H7 115.331
C2 S1 C3 48.328 C2 C3 H6 118.134
C2 C3 H7 118.134 C3 C2 H4 118.134
C3 C2 H5 118.134 H4 C2 H5 115.013
H6 C3 H7 115.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.153      
2 C -0.152      
3 C -0.152      
4 H 0.114      
5 H 0.114      
6 H 0.114      
7 H 0.114      


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 -1.911 1.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.936 0.000 0.000
y 0.000 -24.302 0.000
z 0.000 0.000 -26.138
Traceless
 xyz
x -0.715 0.000 0.000
y 0.000 1.734 0.000
z 0.000 0.000 -1.019
Polar
3z2-r2-2.038
x2-y2-1.633
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.617 0.000 0.000
y 0.000 5.631 0.000
z 0.000 0.000 7.003


<r2> (average value of r2) Å2
<r2> 55.796
(<r2>)1/2 7.470