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All results from a given calculation for C4H4S (Thiophene)

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-551.290352
Energy at 298.15K-551.295013
HF Energy-551.290352
Nuclear repulsion energy203.263186
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 3445 3095 3.04      
2 A1 3407 3061 8.65      
3 A1 1598 1435 21.99      
4 A1 1535 1380 0.15      
5 A1 1213 1090 5.04      
6 A1 1108 996 0.78      
7 A1 891 800 35.32      
8 A1 658 591 1.23      
9 A2 1053 946 0.00      
10 A2 804 722 0.00      
11 A2 617 555 0.00      
12 B1 1029 925 1.61      
13 B1 814 731 129.99      
14 B1 484 435 0.09      
15 B2 3443 3093 3.39      
16 B2 3392 3048 7.25      
17 B2 1741 1565 0.44      
18 B2 1413 1270 8.75      
19 B2 1216 1092 2.53      
20 B2 953 856 1.42      
21 B2 808 726 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 15810.2 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 14205.5 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
0.26854 0.18197 0.10847

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 1.191
C2 0.000 1.234 -0.016
C3 0.000 -1.234 -0.016
C4 0.000 0.718 -1.258
C5 0.000 -0.718 -1.258
H6 0.000 2.267 0.266
H7 0.000 -2.267 0.266
H8 0.000 1.316 -2.150
H9 0.000 -1.316 -2.150

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.72571.72572.55222.55222.44852.44853.59093.5909
C21.72572.46771.34522.31421.07093.51222.13633.3251
C31.72572.46772.31421.34523.51221.07093.32512.1363
C42.55221.34522.31421.43692.17283.35211.07352.2211
C52.55222.31421.34521.43693.35212.17282.22111.0735
H62.44851.07093.51222.17283.35214.53412.59694.3213
H72.44853.51221.07093.35212.17284.53414.32132.5969
H83.59092.13633.32511.07352.22112.59694.32132.6310
H93.59093.32512.13632.22111.07354.32132.59692.6310

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.829 S1 C2 H6 120.397
S1 C3 C5 111.829 S1 C3 H7 120.397
C2 S1 C3 91.284 C2 C4 C5 112.529
C2 C4 H8 123.682 C3 C5 C4 112.529
C3 C5 H9 123.682 C4 C2 H6 127.774
C4 C5 H9 123.789 C5 C3 H7 127.774
C5 C4 H8 123.789
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 0.285      
2 C -0.411      
3 C -0.411      
4 C -0.171      
5 C -0.171      
6 H 0.232      
7 H 0.232      
8 H 0.208      
9 H 0.208      


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 -0.898 0.898
CHELPG 0.000 0.000 -0.798 0.798
AIM 0.000 0.000 -0.473 0.473
ESP 0.000 0.000 -0.862 0.862


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.509 0.000 0.000
y 0.000 -30.915 -0.013
z 0.000 -0.013 -34.896
Traceless
 xyz
x -7.604 0.000 0.000
y 0.000 6.788 -0.013
z 0.000 -0.013 0.816
Polar
3z2-r21.632
x2-y2-9.594
xy0.000
xz0.000
yz-0.013


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.519 0.000 0.000
y 0.000 8.276 -0.005
z 0.000 -0.005 9.540


<r2> (average value of r2) Å2
<r2> 111.418
(<r2>)1/2 10.555