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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-552.455803
Energy at 298.15K-552.462891
HF Energy-552.455803
Nuclear repulsion energy216.605280
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 3386 3043 23.26      
2 A1 3235 2907 0.28      
3 A1 1876 1686 6.83      
4 A1 1645 1478 5.39      
5 A1 1440 1294 1.25      
6 A1 1250 1123 0.80      
7 A1 1020 917 0.19      
8 A1 782 703 4.14      
9 A1 560 504 0.03      
10 A2 3272 2940 0.00      
11 A2 1274 1144 0.00      
12 A2 1099 988 0.00      
13 A2 1045 939 0.00      
14 A2 416 374 0.00      
15 B1 3274 2941 33.98      
16 B1 1257 1129 12.79      
17 B1 1013 910 2.72      
18 B1 759 682 44.78      
19 B1 110 99 4.90      
20 B2 3361 3020 6.89      
21 B2 3235 2907 90.56      
22 B2 1641 1475 1.28      
23 B2 1499 1347 2.33      
24 B2 1402 1259 8.44      
25 B2 1046 940 7.63      
26 B2 899 808 1.71      
27 B2 705 633 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 21249.7 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 19092.9 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
0.22294 0.16005 0.09646

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 -1.335
C5 0.000 -0.658 -1.335
H6 -0.876 1.969 0.133
H7 0.876 1.969 0.133
H8 0.876 -1.969 0.133
H9 -0.876 -1.969 0.133
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
S11.82941.82942.66192.66192.42442.42442.42442.42443.69563.6956
C21.82942.68831.50412.40821.08361.08363.42933.42932.23913.4251
C31.82942.68832.40821.50413.42933.42931.08361.08363.42512.2391
C42.66191.50412.40821.31572.15452.15453.13413.13411.07592.1084
C52.66192.40821.50411.31573.13413.13412.15452.15452.10841.0759
H62.42441.08363.42932.15453.13411.75174.30983.93772.62444.0899
H72.42441.08363.42932.15453.13411.75173.93774.30982.62444.0899
H82.42443.42931.08363.13412.15454.30983.93771.75174.08992.6244
H92.42443.42931.08363.13412.15453.93774.30981.75174.08992.6244
H103.69562.23913.42511.07592.10842.62442.62444.08994.08992.4989
H113.69563.42512.23912.10841.07594.08994.08992.62442.62442.4989

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 105.566 S1 C2 H6 110.014
S1 C2 H7 110.014 S1 C3 C5 105.566
S1 C3 H8 110.014 S1 C3 H9 110.014
C2 S1 C3 94.575 C2 C4 C5 117.147
C2 C4 H10 119.495 C3 C5 C4 117.147
C3 C5 H11 119.495 C4 C2 H6 111.697
C4 C2 H7 111.697 C4 C5 H11 123.358
C5 C3 H8 111.697 C5 C3 H9 111.697
C5 C4 H10 123.358 H6 C2 H7 107.855
H8 C3 H9 107.855
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 0.117      
2 C -0.495      
3 C -0.495      
4 C -0.167      
5 C -0.167      
6 H 0.202      
7 H 0.202      
8 H 0.202      
9 H 0.202      
10 H 0.200      
11 H 0.200      


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 -2.118 2.118
CHELPG 2.094 0.000 0.000 2.094
AIM 0.000 0.000 -0.613 0.613
ESP 0.017 0.000 -2.107 2.107


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.120 0.000 0.000
y 0.000 -32.739 -0.008
z 0.000 -0.008 -39.639
Traceless
 xyz
x -3.931 0.000 0.000
y 0.000 7.140 -0.008
z 0.000 -0.008 -3.209
Polar
3z2-r2-6.418
x2-y2-7.381
xy0.000
xz0.000
yz-0.008


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.056 0.000 0.000
y 0.000 9.755 -0.007
z 0.000 -0.007 7.987


<r2> (average value of r2) Å2
<r2> 128.203
(<r2>)1/2 11.323