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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-552.896210
Energy at 298.15K-552.900579
Nuclear repulsion energy202.314478
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 B3PW91/6-31G*
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 3284 3142 1.58      
2 A1 3244 3104 5.50      
3 A1 1482 1418 11.39      
4 A1 1417 1356 0.17      
5 A1 1116 1068 4.78      
6 A1 1070 1023 2.00      
7 A1 856 819 24.70      
8 A1 617 590 0.16      
9 A2 918 878 0.00      
10 A2 685 656 0.00      
11 A2 576 551 0.00      
12 B1 877 839 0.71      
13 B1 730 699 120.57      
14 B1 457 437 1.00      
15 B2 3282 3140 0.38      
16 B2 3230 3091 5.02      
17 B2 1586 1517 0.03      
18 B2 1288 1232 10.30      
19 B2 1119 1071 4.32      
20 B2 886 848 1.22      
21 B2 761 728 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 14741.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 14102.9 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 B3PW91/6-31G*
ABC
0.26749 0.17983 0.10753

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.194
C2 0.000 1.239 -0.008
C3 0.000 -1.239 -0.008
C4 0.000 0.713 -1.270
C5 0.000 -0.713 -1.270
H6 0.000 2.280 0.287
H7 0.000 -2.280 0.287
H8 0.000 1.320 -2.169
H9 0.000 -1.320 -2.169

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.72581.72582.56462.56462.45382.45383.61263.6126
C21.72582.47761.36712.32421.08213.53122.16283.3494
C31.72582.47762.32421.36713.53121.08213.34942.1628
C42.56461.36712.32421.42592.20873.37361.08502.2229
C52.56462.32421.36711.42593.37362.20872.22291.0850
H62.45381.08213.53122.20873.37364.56012.63694.3579
H72.45383.53121.08213.37362.20874.56014.35792.6369
H83.61262.16283.34941.08502.22292.63694.35792.6398
H93.61263.34942.16282.22291.08504.35792.63692.6398

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.505 S1 C2 H6 120.077
S1 C3 C5 111.505 S1 C3 H7 120.077
C2 S1 C3 91.748 C2 C4 C5 112.621
C2 C4 H8 123.366 C3 C5 C4 112.621
C3 C5 H9 123.366 C4 C2 H6 128.418
C4 C5 H9 124.013 C5 C3 H7 128.418
C5 C4 H8 124.013
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.290     0.040
2 C -0.395     -0.235
3 C -0.395     -0.235
4 C -0.127     -0.130
5 C -0.127     -0.130
6 H 0.205     0.202
7 H 0.205     0.202
8 H 0.173     0.144
9 H 0.173     0.144


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 -0.622 0.622
CHELPG        
AIM        
ESP 0.000 0.000 -0.599 0.599


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 111.792
(<r2>)1/2 10.573