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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/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 B2PLYP/6-31+G**
 hartrees
Energy at 0K-476.538899
Energy at 298.15K-476.543364
HF Energy-476.402418
Nuclear repulsion energy100.812424
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/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 3176 3025 12.38      
2 A1 1531 1458 5.56      
3 A1 1162 1107 4.12      
4 A1 1074 1023 0.82      
5 A1 644 613 26.77      
6 A2 3261 3106 0.00      
7 A2 1211 1154 0.00      
8 A2 923 879 0.00      
9 B1 3273 3118 4.65      
10 B1 977 930 4.46      
11 B1 850 809 0.65      
12 B2 3174 3023 10.76      
13 B2 1503 1431 0.30      
14 B2 1103 1050 41.60      
15 B2 679 646 1.41      

Unscaled Zero Point Vibrational Energy (zpe) 12269.3 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 11685.3 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 B2PLYP/6-31+G**
ABC
0.73663 0.35574 0.26529

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.741 -0.801
C3 0.000 -0.741 -0.801
H4 -0.913 1.253 -1.080
H5 0.913 1.253 -1.080
H6 0.913 -1.253 -1.080
H7 -0.913 -1.253 -1.080

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82841.82842.49222.49222.49222.4922
C21.82841.48281.08371.08372.21142.2114
C31.82841.48282.21142.21141.08371.0837
H42.49221.08372.21141.82683.10122.5061
H52.49221.08372.21141.82682.50613.1012
H62.49222.21141.08373.10122.50611.8268
H72.49222.21141.08372.50613.10121.8268

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.078 S1 C2 H4 115.300
S1 C2 H5 115.300 S1 C3 C2 66.078
S1 C3 H6 115.300 S1 C3 H7 115.300
C2 S1 C3 47.843 C2 C3 H6 118.173
C2 C3 H7 118.173 C3 C2 H4 118.173
C3 C2 H5 118.173 H4 C2 H5 114.895
H6 C3 H7 114.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.078      
2 C -0.318      
3 C -0.318      
4 H 0.179      
5 H 0.179      
6 H 0.179      
7 H 0.179      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.006 0.000 0.000
y 0.000 5.439 0.000
z 0.000 0.000 6.970


<r2> (average value of r2) Å2
<r2> 56.926
(<r2>)1/2 7.545