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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-553.009299
Energy at 298.15K-553.013663
Nuclear repulsion energy201.720447
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 B3LYP/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 3269 3141 1.74      
2 A1 3229 3102 5.50      
3 A1 1468 1411 11.26      
4 A1 1408 1353 0.37      
5 A1 1113 1069 4.18      
6 A1 1059 1017 1.60      
7 A1 837 805 24.02      
8 A1 612 588 0.40      
9 A2 921 885 0.00      
10 A2 686 659 0.00      
11 A2 575 553 0.00      
12 B1 880 846 0.52      
13 B1 729 701 102.66      
14 B1 453 436 0.79      
15 B2 3267 3139 0.54      
16 B2 3215 3089 5.19      
17 B2 1577 1516 0.01      
18 B2 1283 1233 10.29      
19 B2 1115 1072 3.36      
20 B2 878 844 0.95      
21 B2 747 718 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 14661.6 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 14086.9 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 B3LYP/6-31G**
ABC
0.26592 0.17864 0.10686

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.199
C2 0.000 1.243 -0.012
C3 0.000 -1.243 -0.012
C4 0.000 0.715 -1.272
C5 0.000 -0.715 -1.272
H6 0.000 2.284 0.281
H7 0.000 -2.284 0.281
H8 0.000 1.320 -2.172
H9 0.000 -1.320 -2.172

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.73581.73582.57322.57322.46152.46153.62063.6206
C21.73582.48691.36712.32901.08093.53942.16173.3520
C31.73582.48692.32901.36713.53941.08093.35202.1617
C42.57321.36712.32901.42962.20813.37731.08402.2244
C52.57322.32901.36711.42963.37732.20812.22441.0840
H62.46151.08093.53942.20813.37734.56772.63604.3593
H72.46153.53941.08093.37732.20814.56774.35932.6360
H83.62062.16173.35201.08402.22442.63604.35932.6391
H93.62063.35202.16172.22441.08404.35932.63602.6391

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.499 S1 C2 H6 120.028
S1 C3 C5 111.499 S1 C3 H7 120.028
C2 S1 C3 91.506 C2 C4 C5 112.748
C2 C4 H8 123.344 C3 C5 C4 112.748
C3 C5 H9 123.344 C4 C2 H6 128.473
C4 C5 H9 123.908 C5 C3 H7 128.473
C5 C4 H8 123.908
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.250      
2 C -0.298      
3 C -0.298      
4 C -0.052      
5 C -0.052      
6 H 0.129      
7 H 0.129      
8 H 0.096      
9 H 0.096      


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 -0.623 0.623
CHELPG        
AIM        
ESP        


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 3.582 0.000 0.000
y 0.000 8.942 0.000
z 0.000 0.000 9.857


<r2> (average value of r2) Å2
<r2> 112.471
(<r2>)1/2 10.605