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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/CEP-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/CEP-31G
 hartrees
Energy at 0K-35.053342
Energy at 298.15K-35.057625
Nuclear repulsion energy74.191015
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/CEP-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 3279 3175 3.82      
2 A1 3226 3124 6.23      
3 A1 1478 1431 16.32      
4 A1 1374 1330 0.05      
5 A1 1107 1072 3.14      
6 A1 1041 1008 4.56      
7 A1 788 763 29.66      
8 A1 586 568 1.00      
9 A2 953 923 0.00      
10 A2 714 692 0.00      
11 A2 555 538 0.00      
12 B1 907 878 0.68      
13 B1 743 719 222.49      
14 B1 427 413 0.92      
15 B2 3273 3170 4.27      
16 B2 3205 3104 6.23      
17 B2 1556 1507 0.07      
18 B2 1260 1220 19.80      
19 B2 1110 1075 5.85      
20 B2 849 822 0.30      
21 B2 693 671 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14560.9 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 14100.8 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 B3LYP/CEP-31G
ABC
0.25236 0.16685 0.10044

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.524
C2 0.000 1.282 0.243
C3 0.000 -1.282 0.243
C4 0.000 0.731 -1.036
C5 0.000 -0.731 -1.036
H6 0.000 2.328 0.542
H7 0.000 -2.328 0.542
H8 0.000 1.336 -1.943
H9 0.000 -1.336 -1.943

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.81261.81262.66222.66222.52642.52643.71553.7155
C21.81262.56481.39282.38491.08713.62232.18663.4109
C31.81262.56482.38491.39283.62231.08713.41092.1866
C42.66221.39282.38491.46142.24483.44121.09052.2570
C52.66222.38491.39281.46143.44122.24482.25701.0905
H62.52641.08713.62232.24483.44124.65522.67534.4267
H72.52643.62231.08713.44122.24484.65524.42672.6753
H83.71552.18663.41091.09052.25702.67534.42672.6720
H93.71553.41092.18662.25701.09054.42672.67532.6720

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.635 S1 C2 H6 119.078
S1 C3 C5 111.635 S1 C3 H7 119.078
C2 S1 C3 90.060 C2 C4 C5 113.335
C2 C4 H8 122.949 C3 C5 C4 113.335
C3 C5 H9 122.949 C4 C2 H6 129.287
C4 C5 H9 123.716 C5 C3 H7 129.287
C5 C4 H8 123.716
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.185      
2 C -0.520      
3 C -0.520      
4 C -0.162      
5 C -0.162      
6 H 0.299      
7 H 0.299      
8 H 0.291      
9 H 0.291      


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 -1.036 1.036
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 3.206 0.000 0.000
y 0.000 9.237 0.000
z 0.000 0.000 10.294


<r2> (average value of r2) Å2
<r2> 84.852
(<r2>)1/2 9.212