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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-552.931750
Energy at 298.15K-552.936108
Nuclear repulsion energy198.096157
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/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 3309 3183 1.67      
2 A1 3247 3124 5.86      
3 A1 1495 1438 17.35      
4 A1 1404 1351 0.07      
5 A1 1141 1098 3.26      
6 A1 1055 1015 2.10      
7 A1 794 764 25.26      
8 A1 599 576 2.38      
9 A2 957 921 0.00      
10 A2 721 694 0.00      
11 A2 583 560 0.00      
12 B1 915 881 1.37      
13 B1 740 712 144.66      
14 B1 441 424 0.17      
15 B2 3305 3179 0.48      
16 B2 3231 3109 5.94      
17 B2 1595 1535 0.03      
18 B2 1301 1252 16.51      
19 B2 1139 1096 2.70      
20 B2 878 844 0.25      
21 B2 693 666 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 14771.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 14210.2 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/6-31G
ABC
0.25807 0.17059 0.10270

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.241
C2 0.000 1.269 -0.041
C3 0.000 -1.269 -0.041
C4 0.000 0.720 -1.290
C5 0.000 -0.720 -1.290
H6 0.000 2.308 0.250
H7 0.000 -2.308 0.250
H8 0.000 1.316 -2.194
H9 0.000 -1.316 -2.194

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.80341.80342.63072.63072.51152.51153.67843.6784
C21.80342.53801.36422.34881.07853.58852.15433.3645
C31.80342.53802.34881.36423.58851.07853.36452.1543
C42.63071.36422.34881.44032.21113.39661.08322.2279
C52.63072.34881.36421.44033.39662.21112.22791.0832
H62.51151.07853.58852.21113.39664.61542.63764.3706
H72.51153.58851.07853.39662.21114.61544.37062.6376
H83.67842.15433.36451.08322.22792.63764.37062.6315
H93.67843.36452.15432.22791.08324.37062.63762.6315

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.553 S1 C2 H6 119.116
S1 C3 C5 111.553 S1 C3 H7 119.116
C2 S1 C3 89.448 C2 C4 C5 113.723
C2 C4 H8 122.923 C3 C5 C4 113.723
C3 C5 H9 122.923 C4 C2 H6 129.332
C4 C5 H9 123.353 C5 C3 H7 129.332
C5 C4 H8 123.353
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.393      
2 C -0.466      
3 C -0.466      
4 C -0.043      
5 C -0.043      
6 H 0.169      
7 H 0.169      
8 H 0.143      
9 H 0.143      


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 -1.016 1.016
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 3.148 0.000 0.000
y 0.000 8.846 0.000
z 0.000 0.000 9.846


<r2> (average value of r2) Å2
<r2> 116.102
(<r2>)1/2 10.775