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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-552.465706
Energy at 298.15K-552.472800
Nuclear repulsion energy216.639817
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 3368 3040 22.11      
2 A1 3213 2900 0.25      
3 A1 1874 1692 6.65      
4 A1 1627 1469 5.35      
5 A1 1430 1290 0.88      
6 A1 1243 1122 0.82      
7 A1 1018 919 0.22      
8 A1 781 705 4.15      
9 A1 560 505 0.02      
10 A2 3253 2936 0.00      
11 A2 1265 1142 0.00      
12 A2 1097 990 0.00      
13 A2 1039 938 0.00      
14 A2 417 376 0.00      
15 B1 3255 2938 33.17      
16 B1 1248 1126 12.78      
17 B1 1007 909 2.87      
18 B1 757 683 43.79      
19 B1 110 99 4.98      
20 B2 3342 3017 5.49      
21 B2 3213 2900 89.22      
22 B2 1623 1465 0.76      
23 B2 1492 1347 2.50      
24 B2 1391 1255 7.97      
25 B2 1042 941 8.27      
26 B2 897 810 1.75      
27 B2 704 636 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 21132.9 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19074.5 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
0.22299 0.16013 0.09651

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 1.244
C2 0.000 1.344 0.004
C3 0.000 -1.344 0.004
C4 0.000 0.658 -1.334
C5 0.000 -0.658 -1.334
H6 -0.877 1.968 0.134
H7 0.877 1.968 0.134
H8 0.877 -1.968 0.134
H9 -0.877 -1.968 0.134
H10 0.000 1.249 -2.234
H11 0.000 -1.249 -2.234

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82901.82902.66102.66102.42402.42402.42402.42403.69543.6954
C21.82902.68801.50372.40781.08411.08413.42893.42892.23973.4247
C31.82902.68802.40781.50373.42893.42891.08411.08413.42472.2397
C42.66101.50372.40781.31562.15442.15443.13383.13381.07632.1080
C52.66102.40781.50371.31563.13383.13382.15442.15442.10801.0763
H62.42401.08413.42892.15443.13381.75344.30953.93662.62554.0894
H72.42401.08413.42892.15443.13381.75343.93664.30952.62554.0894
H82.42403.42891.08413.13382.15444.30953.93661.75344.08942.6255
H92.42403.42891.08413.13382.15443.93664.30951.75344.08942.6255
H103.69542.23973.42471.07632.10802.62552.62554.08944.08942.4971
H113.69543.42472.23972.10801.07634.08944.08942.62552.62552.4971

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 105.553 S1 C2 H6 109.983
S1 C2 H7 109.983 S1 C3 C5 105.553
S1 C3 H8 109.983 S1 C3 H9 109.983
C2 S1 C3 94.589 C2 C4 C5 117.153
C2 C4 H10 119.556 C3 C5 C4 117.153
C3 C5 H11 119.556 C4 C2 H6 111.694
C4 C2 H7 111.694 C4 C5 H11 123.292
C5 C3 H8 111.694 C5 C3 H9 111.694
C5 C4 H10 123.292 H6 C2 H7 107.934
H8 C3 H9 107.934
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 0.114 -0.013    
2 C -0.395 -0.403    
3 C -0.395 0.134    
4 C -0.121 -0.251    
5 C -0.121 -0.013    
6 H 0.155 0.346    
7 H 0.155 0.134    
8 H 0.155 -0.252    
9 H 0.155 -0.014    
10 H 0.149 -0.013    
11 H 0.149 0.346    


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 -2.110 2.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.077 0.000 0.000
y 0.000 -32.715 0.000
z 0.000 0.000 -39.631
Traceless
 xyz
x -3.904 0.000 0.000
y 0.000 7.139 0.000
z 0.000 0.000 -3.234
Polar
3z2-r2-6.469
x2-y2-7.362
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.066 -0.000 0.000
y -0.000 9.838 -0.000
z 0.000 -0.000 5.118


<r2> (average value of r2) Å2
<r2> 128.147
(<r2>)1/2 11.320