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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-552.963374
Energy at 298.15K-552.967771
Nuclear repulsion energy203.136985
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 B1B95/6-31G*
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 3302 3135 1.70      
2 A1 3266 3100 4.69      
3 A1 1502 1426 12.26      
4 A1 1428 1356 0.23      
5 A1 1119 1062 4.87      
6 A1 1079 1024 1.54      
7 A1 867 823 25.49      
8 A1 619 588 0.09      
9 A2 926 879 0.00      
10 A2 695 660 0.00      
11 A2 578 548 0.00      
12 B1 887 842 1.02      
13 B1 737 699 116.62      
14 B1 460 436 0.95      
15 B2 3300 3133 0.29      
16 B2 3251 3087 4.87      
17 B2 1606 1524 0.04      
18 B2 1293 1227 9.64      
19 B2 1123 1066 4.12      
20 B2 894 849 1.27      
21 B2 770 730 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 14849.5 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 14096.7 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 B1B95/6-31G*
ABC
0.26972 0.18130 0.10842

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.188
C2 0.000 1.233 -0.007
C3 0.000 -1.233 -0.007
C4 0.000 0.711 -1.265
C5 0.000 -0.711 -1.265
H6 0.000 2.272 0.287
H7 0.000 -2.272 0.287
H8 0.000 1.318 -2.161
H9 0.000 -1.318 -2.161

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.71671.71672.55432.55432.44402.44403.59953.5995
C21.71672.46561.36272.31551.07973.51692.15653.3390
C31.71672.46562.31551.36273.51691.07973.33902.1565
C42.55431.36272.31551.42152.20153.36241.08242.2177
C52.55432.31551.36271.42153.36242.20152.21771.0824
H62.44401.07973.51692.20153.36244.54372.62774.3452
H72.44403.51691.07973.36242.20154.54374.34522.6277
H83.59952.15653.33901.08242.21772.62774.34522.6357
H93.59953.33902.15652.21771.08244.34522.62772.6357

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.576 S1 C2 H6 120.122
S1 C3 C5 111.576 S1 C3 H7 120.122
C2 S1 C3 91.799 C2 C4 C5 112.525
C2 C4 H8 123.357 C3 C5 C4 112.525
C3 C5 H9 123.357 C4 C2 H6 128.303
C4 C5 H9 124.118 C5 C3 H7 128.303
C5 C4 H8 124.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.294      
2 C -0.394      
3 C -0.394      
4 C -0.121      
5 C -0.121      
6 H 0.200      
7 H 0.200      
8 H 0.168      
9 H 0.168      


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 -0.589 0.589
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.384 0.000 0.000
y 0.000 -30.630 0.000
z 0.000 0.000 -33.986
Traceless
 xyz
x -7.076 0.000 0.000
y 0.000 6.055 0.000
z 0.000 0.000 1.021
Polar
3z2-r22.042
x2-y2-8.754
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.550 0.000 0.000
y 0.000 8.761 0.000
z 0.000 0.000 9.683


<r2> (average value of r2) Å2
<r2> 111.054
(<r2>)1/2 10.538