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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-553.027368
Energy at 298.15K-553.031769
Nuclear repulsion energy203.299819
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 B1B95/6-311G**
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 3266 3136 1.57      
2 A1 3231 3102 3.87      
3 A1 1476 1417 12.75      
4 A1 1405 1349 0.37      
5 A1 1102 1058 4.89      
6 A1 1067 1024 2.24      
7 A1 858 824 27.87      
8 A1 617 592 0.08      
9 A2 916 879 0.00      
10 A2 689 661 0.00      
11 A2 571 548 0.00      
12 B1 880 844 0.39      
13 B1 725 696 140.26      
14 B1 457 438 1.10      
15 B2 3264 3134 0.16      
16 B2 3217 3089 4.31      
17 B2 1578 1515 0.00      
18 B2 1274 1223 9.71      
19 B2 1106 1062 4.87      
20 B2 884 849 1.78      
21 B2 766 735 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 14673.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 14087.8 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 B1B95/6-311G**
ABC
0.27050 0.18138 0.10858

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.188
C2 0.000 1.231 -0.007
C3 0.000 -1.231 -0.007
C4 0.000 0.710 -1.265
C5 0.000 -0.710 -1.265
H6 0.000 2.267 0.290
H7 0.000 -2.267 0.290
H8 0.000 1.316 -2.160
H9 0.000 -1.316 -2.160

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.71611.71612.55362.55362.43882.43883.59713.5971
C21.71612.46241.36142.31261.07803.51122.15383.3348
C31.71612.46242.31261.36143.51121.07803.33482.1538
C42.55361.36142.31261.41932.20093.35861.08082.2145
C52.55362.31261.36141.41933.35862.20092.21451.0808
H62.43881.07803.51122.20093.35864.53482.62764.3406
H72.43883.51121.07803.35862.20094.53484.34062.6276
H83.59712.15383.33481.08082.21452.62764.34062.6323
H93.59713.33482.15382.21451.08084.34062.62762.6323

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.631 S1 C2 H6 119.837
S1 C3 C5 111.631 S1 C3 H7 119.837
C2 S1 C3 91.686 C2 C4 C5 112.526
C2 C4 H8 123.338 C3 C5 C4 112.526
C3 C5 H9 123.338 C4 C2 H6 128.532
C4 C5 H9 124.136 C5 C3 H7 128.532
C5 C4 H8 124.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.279      
2 C -0.311      
3 C -0.311      
4 C -0.094      
5 C -0.094      
6 H 0.151      
7 H 0.151      
8 H 0.114      
9 H 0.114      


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 -0.512 0.512
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.114 0.000 0.000
y 0.000 -31.216 0.000
z 0.000 0.000 -34.365
Traceless
 xyz
x -7.323 0.000 0.000
y 0.000 6.023 0.000
z 0.000 0.000 1.300
Polar
3z2-r22.599
x2-y2-8.898
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.026 0.000 0.000
y 0.000 9.190 0.000
z 0.000 0.000 10.286


<r2> (average value of r2) Å2
<r2> 111.266
(<r2>)1/2 10.548