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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-553.020201
Energy at 298.15K-553.024577
Nuclear repulsion energy203.261021
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 B1B95/6-311G*
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 3265 3130 1.78      
2 A1 3230 3096 7.35      
3 A1 1480 1418 12.53      
4 A1 1412 1354 0.35      
5 A1 1108 1062 5.40      
6 A1 1069 1025 2.23      
7 A1 858 822 27.96      
8 A1 618 592 0.09      
9 A2 905 867 0.00      
10 A2 681 653 0.00      
11 A2 570 546 0.00      
12 B1 868 832 0.51      
13 B1 721 691 147.40      
14 B1 456 437 1.31      
15 B2 3263 3128 1.70      
16 B2 3215 3082 5.34      
17 B2 1583 1517 0.01      
18 B2 1281 1228 9.82      
19 B2 1111 1065 5.15      
20 B2 886 849 1.68      
21 B2 766 735 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 14671.7 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 14064.3 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 B1B95/6-311G*
ABC
0.27052 0.18126 0.10854

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.189
C2 0.000 1.231 -0.008
C3 0.000 -1.231 -0.008
C4 0.000 0.710 -1.265
C5 0.000 -0.710 -1.265
H6 0.000 2.268 0.289
H7 0.000 -2.268 0.289
H8 0.000 1.317 -2.161
H9 0.000 -1.317 -2.161

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.71631.71632.55442.55442.44002.44003.59893.5989
C21.71632.46171.36132.31251.07893.51162.15493.3357
C31.71632.46172.31251.36133.51161.07893.33572.1549
C42.55441.36132.31251.41952.20103.35911.08192.2157
C52.55442.31251.36131.41953.35912.20102.21571.0819
H62.44001.07893.51162.20103.35914.53642.62804.3421
H72.44003.51161.07893.35912.20104.53644.34212.6280
H83.59892.15493.33571.08192.21572.62804.34212.6338
H93.59893.33572.15492.21571.08194.34212.62802.6338

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.673 S1 C2 H6 119.860
S1 C3 C5 111.673 S1 C3 H7 119.860
C2 S1 C3 91.639 C2 C4 C5 112.507
C2 C4 H8 123.355 C3 C5 C4 112.507
C3 C5 H9 123.355 C4 C2 H6 128.467
C4 C5 H9 124.138 C5 C3 H7 128.467
C5 C4 H8 124.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.303      
2 C -0.416      
3 C -0.416      
4 C -0.188      
5 C -0.188      
6 H 0.243      
7 H 0.243      
8 H 0.209      
9 H 0.209      


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 -0.533 0.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.284 0.000 0.000
y 0.000 -31.073 0.000
z 0.000 0.000 -34.274
Traceless
 xyz
x -7.611 0.000 0.000
y 0.000 6.206 0.000
z 0.000 0.000 1.404
Polar
3z2-r22.809
x2-y2-9.211
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.947 0.000 0.000
y 0.000 9.125 0.000
z 0.000 0.000 10.233


<r2> (average value of r2) Å2
<r2> 111.266
(<r2>)1/2 10.548