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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/CEP-121G

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-121G
 hartrees
Energy at 0K-35.065207
Energy at 298.15K-35.069525
Nuclear repulsion energy74.532495
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-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3246 3164 2.18      
2 A1 3195 3114 10.41      
3 A1 1454 1417 17.00      
4 A1 1371 1336 0.20      
5 A1 1113 1084 3.20      
6 A1 1031 1005 3.81      
7 A1 788 768 25.38      
8 A1 589 574 1.31      
9 A2 948 924 0.00      
10 A2 697 680 0.00      
11 A2 557 543 0.00      
12 B1 897 874 0.02      
13 B1 730 711 178.79      
14 B1 428 417 0.39      
15 B2 3241 3158 3.79      
16 B2 3178 3097 7.60      
17 B2 1541 1502 0.18      
18 B2 1264 1232 20.71      
19 B2 1113 1084 3.66      
20 B2 859 838 0.46      
21 B2 691 674 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14465.9 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 14097.0 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-121G
ABC
0.25423 0.16812 0.10120

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.522
C2 0.000 1.279 0.237
C3 0.000 -1.279 0.237
C4 0.000 0.727 -1.028
C5 0.000 -0.727 -1.028
H6 0.000 2.320 0.531
H7 0.000 -2.320 0.531
H8 0.000 1.326 -1.934
H9 0.000 -1.326 -1.934

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.81241.81242.65132.65132.52222.52223.70123.7012
C21.81242.55711.38002.37131.08173.61002.17143.3905
C31.81242.55712.37131.38003.61001.08173.39052.1714
C42.65131.38002.37131.45432.22853.42241.08582.2439
C52.65132.37131.38001.45433.42242.22852.24391.0858
H62.52221.08173.61002.22853.42244.63902.65784.4005
H72.52223.61001.08173.42242.22854.63904.40052.6578
H83.70122.17143.39051.08582.24392.65784.40052.6515
H93.70123.39052.17142.24391.08584.40052.65782.6515

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.585 S1 C2 H6 119.089
S1 C3 C5 111.585 S1 C3 H7 119.089
C2 S1 C3 89.727 C2 C4 C5 113.551
C2 C4 H8 122.993 C3 C5 C4 113.551
C3 C5 H9 122.993 C4 C2 H6 129.326
C4 C5 H9 123.455 C5 C3 H7 129.326
C5 C4 H8 123.455
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.298      
2 C -0.507      
3 C -0.507      
4 C -0.003      
5 C -0.003      
6 H 0.186      
7 H 0.186      
8 H 0.175      
9 H 0.175      


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 -0.937 0.937
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 4.210 0.000 0.000
y 0.000 9.675 0.000
z 0.000 0.000 10.716


<r2> (average value of r2) Å2
<r2> 84.483
(<r2>)1/2 9.191