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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: mPW1PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-552.992086
Energy at 298.15K-552.996521
Nuclear repulsion energy203.367970
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(2df,p)
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 3289 3140 2.00      
2 A1 3250 3103 3.02      
3 A1 1472 1405 10.33      
4 A1 1408 1344 0.17      
5 A1 1106 1056 3.39      
6 A1 1072 1023 2.19      
7 A1 863 824 23.47      
8 A1 620 592 0.05      
9 A2 936 893 0.00      
10 A2 703 671 0.00      
11 A2 584 557 0.00      
12 B1 893 853 0.12      
13 B1 744 710 100.30      
14 B1 465 444 0.74      
15 B2 3286 3137 0.02      
16 B2 3236 3089 3.74      
17 B2 1577 1506 0.13      
18 B2 1279 1221 10.05      
19 B2 1110 1060 3.46      
20 B2 888 848 0.86      
21 B2 772 737 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 14776.1 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 14106.7 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(2df,p)
ABC
0.26971 0.18211 0.10871

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.184
C2 0.000 1.234 -0.004
C3 0.000 -1.234 -0.004
C4 0.000 0.710 -1.264
C5 0.000 -0.710 -1.264
H6 0.000 2.270 0.294
H7 0.000 -2.270 0.294
H8 0.000 1.315 -2.161
H9 0.000 -1.315 -2.161

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.71281.71282.54862.54862.43832.43833.59393.5939
C21.71282.46721.36372.31611.07873.51642.15793.3385
C31.71282.46722.31611.36373.51641.07873.33852.1579
C42.54861.36372.31611.42062.20453.36301.08192.2151
C52.54862.31611.36371.42063.36302.20452.21511.0819
H62.43831.07873.51642.20453.36304.54032.63414.3451
H72.43833.51641.07873.36302.20454.54034.34512.6341
H83.59392.15793.33851.08192.21512.63414.34512.6302
H93.59393.33852.15792.21511.08194.34512.63412.6302

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.364 S1 C2 H6 120.009
S1 C3 C5 111.364 S1 C3 H7 120.009
C2 S1 C3 92.142 C2 C4 C5 112.565
C2 C4 H8 123.446 C3 C5 C4 112.565
C3 C5 H9 123.446 C4 C2 H6 128.627
C4 C5 H9 123.989 C5 C3 H7 128.627
C5 C4 H8 123.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.034      
2 C -0.190      
3 C -0.190      
4 C -0.126      
5 C -0.126      
6 H 0.161      
7 H 0.161      
8 H 0.138      
9 H 0.138      


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
Primitive
 xyz
x -39.091 0.000 0.000
y 0.000 -30.544 0.000
z 0.000 0.000 -34.051
Traceless
 xyz
x -6.794 0.000 0.000
y 0.000 6.027 0.000
z 0.000 0.000 0.766
Polar
3z2-r21.533
x2-y2-8.547
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.310 0.000 0.000
y 0.000 9.067 0.000
z 0.000 0.000 10.053


<r2> (average value of r2) Å2
<r2> 110.768
(<r2>)1/2 10.525