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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-476.793041
Energy at 298.15K-476.797467
HF Energy-476.793041
Nuclear repulsion energy100.434238
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 B3LYP/6-31+G**
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 3136 3023 13.44      
2 A1 1508 1454 5.11      
3 A1 1147 1106 4.04      
4 A1 1052 1014 0.79      
5 A1 628 606 28.08      
6 A2 3217 3102 0.00      
7 A2 1196 1153 0.00      
8 A2 902 870 0.00      
9 B1 3230 3115 5.40      
10 B1 958 924 4.39      
11 B1 839 809 0.96      
12 B2 3135 3022 12.16      
13 B2 1480 1427 0.55      
14 B2 1080 1041 40.38      
15 B2 661 638 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 12083.7 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 11651.1 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 B3LYP/6-31+G**
ABC
0.73449 0.35200 0.26304

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

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 -0.915 1.258 -1.083
H5 0.915 1.258 -1.083
H6 0.915 -1.258 -1.083
H7 -0.915 -1.258 -1.083

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83771.83772.50062.50062.50062.5006
C21.83771.48311.08661.08662.21612.2161
C31.83771.48312.21612.21611.08661.0866
H42.50061.08662.21611.83073.11112.5154
H52.50061.08662.21611.83072.51543.1111
H62.50062.21611.08663.11112.51541.8307
H72.50062.21611.08662.51543.11111.8307

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.202 S1 C2 H4 115.119
S1 C2 H5 115.119 S1 C3 C2 66.202
S1 C3 H6 115.119 S1 C3 H7 115.119
C2 S1 C3 47.596 C2 C3 H6 118.362
C2 C3 H7 118.362 C3 C2 H4 118.362
C3 C2 H5 118.362 H4 C2 H5 114.783
H6 C3 H7 114.783
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.048      
2 C -0.341      
3 C -0.341      
4 H 0.182      
5 H 0.182      
6 H 0.182      
7 H 0.182      


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 -2.158 2.158
CHELPG        
AIM        
ESP 0.024 0.000 -2.207 2.207


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.592 0.000 0.000
y 0.000 -24.610 0.000
z 0.000 0.000 -26.748
Traceless
 xyz
x -0.913 0.000 0.000
y 0.000 2.060 0.000
z 0.000 0.000 -1.147
Polar
3z2-r2-2.294
x2-y2-1.982
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.084 0.000 0.000
y 0.000 5.515 0.000
z 0.000 0.000 7.108


<r2> (average value of r2) Å2
<r2> 57.251
(<r2>)1/2 7.566