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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-550.184109
Energy at 298.15K-550.188481
Nuclear repulsion energy198.141309
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/3-21G
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 3302 3186 1.55      
2 A1 3244 3130 1.64      
3 A1 1472 1420 17.33      
4 A1 1397 1348 0.02      
5 A1 1146 1105 3.05      
6 A1 1032 996 1.90      
7 A1 781 754 26.71      
8 A1 599 578 3.15      
9 A2 965 931 0.00      
10 A2 734 708 0.00      
11 A2 588 567 0.00      
12 B1 935 902 2.22      
13 B1 747 721 158.55      
14 B1 441 426 0.19      
15 B2 3298 3182 0.10      
16 B2 3230 3116 3.43      
17 B2 1584 1529 0.23      
18 B2 1305 1259 15.73      
19 B2 1139 1099 3.53      
20 B2 884 853 0.16      
21 B2 676 652 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 14749.1 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 14231.4 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/3-21G
ABC
0.25750 0.17092 0.10273

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.242
C2 0.000 1.271 -0.044
C3 0.000 -1.271 -0.044
C4 0.000 0.721 -1.286
C5 0.000 -0.721 -1.286
H6 0.000 2.311 0.236
H7 0.000 -2.311 0.236
H8 0.000 1.311 -2.192
H9 0.000 -1.311 -2.192

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.80761.80762.62822.62822.52002.52003.67523.6752
C21.80762.54181.35832.34731.07683.59262.14823.3587
C31.80762.54182.34731.35833.59261.07683.35872.1482
C42.62821.35832.34731.44192.20083.39221.08132.2250
C52.62822.34731.35831.44193.39222.20082.22501.0813
H62.52001.07683.59262.20083.39224.62152.62544.3604
H72.52003.59261.07683.39222.20084.62154.36042.6254
H83.67522.14823.35871.08132.22502.62544.36042.6226
H93.67523.35872.14822.22501.08134.36042.62542.6226

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.441 S1 C2 H6 119.612
S1 C3 C5 111.441 S1 C3 H7 119.612
C2 S1 C3 89.350 C2 C4 C5 113.884
C2 C4 H8 123.024 C3 C5 C4 113.884
C3 C5 H9 123.024 C4 C2 H6 128.947
C4 C5 H9 123.091 C5 C3 H7 128.947
C5 C4 H8 123.091
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.516     0.010
2 C -0.539     -0.240
3 C -0.539     -0.240
4 C -0.146     -0.145
5 C -0.146     -0.145
6 H 0.228     0.219
7 H 0.228     0.219
8 H 0.199     0.161
9 H 0.199     0.161


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 -0.966 0.966
CHELPG        
AIM        
ESP 0.000 0.000 -0.940 0.940


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 2.560 0.000 0.000
y 0.000 8.500 0.000
z 0.000 0.000 9.444


<r2> (average value of r2) Å2
<r2> 116.161
(<r2>)1/2 10.778