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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-552.969746
Energy at 298.15K-552.974148
Nuclear repulsion energy202.689039
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 mPW1PW91/6-31G*
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 3304 3134 1.64      
2 A1 3266 3097 4.64      
3 A1 1494 1417 12.15      
4 A1 1428 1354 0.13      
5 A1 1123 1065 5.00      
6 A1 1077 1021 1.88      
7 A1 865 820 25.50      
8 A1 622 590 0.15      
9 A2 928 880 0.00      
10 A2 694 658 0.00      
11 A2 580 550 0.00      
12 B1 888 842 0.83      
13 B1 737 699 122.71      
14 B1 461 437 0.95      
15 B2 3303 3132 0.18      
16 B2 3252 3084 4.72      
17 B2 1599 1517 0.05      
18 B2 1297 1230 10.11      
19 B2 1126 1068 4.43      
20 B2 895 848 1.32      
21 B2 769 729 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 14852.6 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 14084.7 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 mPW1PW91/6-31G*
ABC
0.26841 0.18054 0.10794

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.191
C2 0.000 1.236 -0.007
C3 0.000 -1.236 -0.007
C4 0.000 0.712 -1.268
C5 0.000 -0.712 -1.268
H6 0.000 2.276 0.286
H7 0.000 -2.276 0.286
H8 0.000 1.318 -2.165
H9 0.000 -1.318 -2.165

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.72191.72192.55972.55972.44942.44943.60613.6061
C21.72192.47271.36482.32051.08053.52482.15953.3442
C31.72192.47272.32051.36483.52481.08053.34422.1595
C42.55971.36482.32051.42442.20483.36831.08332.2202
C52.55972.32051.36481.42443.36832.20482.22021.0833
H62.44941.08053.52482.20483.36834.55232.63224.3511
H72.44943.52481.08053.36832.20484.55234.35112.6322
H83.60612.15953.34421.08332.22022.63224.35112.6369
H93.60613.34422.15952.22021.08334.35112.63222.6369

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.525 S1 C2 H6 120.111
S1 C3 C5 111.525 S1 C3 H7 120.111
C2 S1 C3 91.780 C2 C4 C5 112.585
C2 C4 H8 123.385 C3 C5 C4 112.585
C3 C5 H9 123.385 C4 C2 H6 128.364
C4 C5 H9 124.031 C5 C3 H7 128.364
C5 C4 H8 124.031
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.297      
2 C -0.404      
3 C -0.404      
4 C -0.134      
5 C -0.134      
6 H 0.210      
7 H 0.210      
8 H 0.179      
9 H 0.179      


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 -0.630 0.630
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> 111.461
(<r2>)1/2 10.558