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All results from a given calculation for C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-552.362799
Energy at 298.15K-552.369932
Nuclear repulsion energy213.625928
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 HF/6-31G
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 3389 3060 19.87      
2 A1 3251 2935 0.55      
3 A1 1868 1687 5.64      
4 A1 1644 1484 8.86      
5 A1 1425 1286 0.26      
6 A1 1278 1154 0.84      
7 A1 1023 923 0.78      
8 A1 736 665 6.77      
9 A1 550 496 0.09      
10 A2 3302 2981 0.00      
11 A2 1283 1158 0.00      
12 A2 1132 1022 0.00      
13 A2 1040 939 0.00      
14 A2 433 391 0.00      
15 B1 3304 2983 22.10      
16 B1 1265 1143 15.73      
17 B1 1003 905 3.00      
18 B1 785 708 63.56      
19 B1 134 121 6.53      
20 B2 3360 3034 3.79      
21 B2 3250 2935 66.44      
22 B2 1641 1482 0.26      
23 B2 1516 1369 5.37      
24 B2 1396 1260 8.91      
25 B2 1061 958 9.82      
26 B2 906 818 2.25      
27 B2 660 596 1.52      

Unscaled Zero Point Vibrational Energy (zpe) 21315.9 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 19246.2 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 HF/6-31G
ABC
0.21717 0.15461 0.09343

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.279
C2 0.000 1.370 -0.023
C3 0.000 -1.370 -0.023
C4 0.000 0.661 -1.347
C5 0.000 -0.661 -1.347
H6 -0.879 1.982 0.117
H7 0.879 1.982 0.117
H8 0.879 -1.982 0.117
H9 -0.879 -1.982 0.117
H10 0.000 1.245 -2.248
H11 0.000 -1.245 -2.248

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.89051.89052.70782.70782.46022.46022.46022.46023.74003.7400
C21.89052.74081.50192.42431.08001.08003.46883.46882.22813.4331
C31.89052.74082.42431.50193.46883.46881.08001.08003.43312.2281
C42.70781.50192.42431.32142.15902.15903.14643.14641.07362.1075
C52.70782.42431.50191.32143.14643.14642.15902.15902.10751.0736
H62.46021.08003.46882.15903.14641.75764.33673.96462.62834.0959
H72.46021.08003.46882.15903.14641.75763.96464.33672.62834.0959
H82.46023.46881.08003.14642.15904.33673.96461.75764.09592.6283
H92.46023.46881.08003.14642.15903.96464.33671.75764.09592.6283
H103.74002.22813.43311.07362.10752.62832.62834.09594.09592.4891
H113.74003.43312.22812.10751.07364.09594.09592.62832.62832.4891

picture of Thiophene, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 105.342 S1 C2 H6 108.745
S1 C2 H7 108.745 S1 C3 C5 105.342
S1 C3 H8 108.745 S1 C3 H9 108.745
C2 S1 C3 92.916 C2 C4 C5 118.200
C2 C4 H10 118.852 C3 C5 C4 118.200
C3 C5 H11 118.852 C4 C2 H6 112.461
C4 C2 H7 112.461 C4 C5 H11 122.947
C5 C3 H8 112.461 C5 C3 H9 112.461
C5 C4 H10 122.947 H6 C2 H7 108.922
H8 C3 H9 108.922
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.232 -0.011    
2 C -0.594 -0.433    
3 C -0.594 0.133    
4 C -0.137 -0.248    
5 C -0.137 -0.011    
6 H 0.208 0.353    
7 H 0.208 0.133    
8 H 0.208 -0.248    
9 H 0.208 -0.011    
10 H 0.200 -0.011    
11 H 0.200 0.353    


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 -2.485 2.485
CHELPG 2.432 0.000 0.000 2.432
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.514 0.000 0.000
y 0.000 -32.766 0.000
z 0.000 0.000 -40.654
Traceless
 xyz
x -3.804 0.000 0.000
y 0.000 7.818 0.000
z 0.000 0.000 -4.014
Polar
3z2-r2-8.028
x2-y2-7.748
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.172 0.000 0.000
y 0.000 10.077 0.000
z 0.000 0.000 4.742


<r2> (average value of r2) Å2
<r2> 131.512
(<r2>)1/2 11.468