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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-552.975765
Energy at 298.15K-552.979951
Nuclear repulsion energy200.283238
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 BLYP/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 3166 3158 1.43      
2 A1 3124 3116 12.37      
3 A1 1400 1397 8.96      
4 A1 1353 1350 0.99      
5 A1 1080 1078 4.15      
6 A1 1024 1022 2.96      
7 A1 797 795 24.14      
8 A1 592 590 0.48      
9 A2 856 854 0.00      
10 A2 636 635 0.00      
11 A2 550 549 0.00      
12 B1 816 814 0.05      
13 B1 686 684 138.90      
14 B1 436 435 1.55      
15 B2 3164 3156 4.19      
16 B2 3110 3103 6.53      
17 B2 1503 1499 0.00      
18 B2 1240 1237 11.88      
19 B2 1080 1077 4.41      
20 B2 848 846 0.83      
21 B2 708 706 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 14086.0 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 14050.7 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 BLYP/6-311G*
ABC
0.26281 0.17569 0.10530

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.211
C2 0.000 1.252 -0.015
C3 0.000 -1.252 -0.015
C4 0.000 0.717 -1.282
C5 0.000 -0.717 -1.282
H6 0.000 2.297 0.283
H7 0.000 -2.297 0.283
H8 0.000 1.326 -2.187
H9 0.000 -1.326 -2.187

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.75211.75212.59392.59392.47702.47703.64673.6467
C21.75212.50411.37532.34171.08633.56132.17293.3705
C31.75212.50412.34171.37533.56131.08633.37052.1729
C42.59391.37532.34171.43452.22363.39611.09012.2341
C52.59392.34171.37531.43453.39612.22362.23411.0901
H62.47701.08633.56132.22363.39614.59342.65374.3841
H72.47703.56131.08633.39612.22364.59344.38412.6537
H83.64672.17293.37051.09012.23412.65374.38412.6512
H93.64673.37052.17292.23411.09014.38412.65372.6512

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 119.688
S1 C3 C5 111.505 S1 C3 H7 119.688
C2 S1 C3 91.222 C2 C4 C5 112.884
C2 C4 H8 123.192 C3 C5 C4 112.884
C3 C5 H9 123.192 C4 C2 H6 128.807
C4 C5 H9 123.923 C5 C3 H7 128.807
C5 C4 H8 123.923
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.275      
2 C -0.381      
3 C -0.381      
4 C -0.158      
5 C -0.158      
6 H 0.218      
7 H 0.218      
8 H 0.183      
9 H 0.183      


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 -0.550 0.550
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 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> 114.308
(<r2>)1/2 10.692