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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G3B3
 hartrees
Energy at 0K-552.749082
Energy at 298.15K-552.743931
Nuclear repulsion energy 
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 3273 3143 1.64      
2 A1 3231 3103 7.04      
3 A1 1470 1412 11.13      
4 A1 1414 1357 0.42      
5 A1 1118 1074 4.26      
6 A1 1061 1019 1.57      
7 A1 838 805 23.93      
8 A1 612 588 0.38      
9 A2 918 882 0.00      
10 A2 684 656 0.00      
11 A2 575 552 0.00      
12 B1 877 843 0.57      
13 B1 729 700 106.23      
14 B1 453 435 0.87      
15 B2 3271 3141 1.08      
16 B2 3218 3090 5.63      
17 B2 1581 1518 0.02      
18 B2 1289 1238 10.52      
19 B2 1121 1076 3.37      
20 B2 880 845 0.94      
21 B2 748 718 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 14680.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 14097.3 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 B3LYP/6-31G*
ABC
0.26581 0.17855 0.10681

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 1.200
C2 0.000 1.244 -0.012
C3 0.000 -1.244 -0.012
C4 0.000 0.715 -1.273
C5 0.000 -0.715 -1.273
H6 0.000 2.285 0.281
H7 0.000 -2.285 0.281
H8 0.000 1.320 -2.173
H9 0.000 -1.320 -2.173

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.73621.73622.57372.57372.46292.46293.62203.6220
C21.73622.48721.36722.32941.08163.54072.16293.3530
C31.73622.48722.32941.36723.54071.08163.35302.1629
C42.57371.36722.32941.43002.20853.37821.08482.2251
C52.57372.32941.36721.43003.37822.20852.22511.0848
H62.46291.08163.54072.20853.37824.56992.63704.3606
H72.46293.54071.08163.37822.20854.56994.36062.6370
H83.62202.16293.35301.08482.22512.63704.36062.6393
H93.62203.35302.16292.22511.08484.36062.63702.6393

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.507 S1 C2 H6 120.068
S1 C3 C5 111.507 S1 C3 H7 120.068
C2 S1 C3 91.498 C2 C4 C5 112.744
C2 C4 H8 123.382 C3 C5 C4 112.744
C3 C5 H9 123.382 C4 C2 H6 128.425
C4 C5 H9 123.874 C5 C3 H7 128.425
C5 C4 H8 123.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.254 0.012   0.027
2 C -0.346 -0.199   -0.219
3 C -0.346 -0.199   -0.219
4 C -0.096 -0.070   -0.118
5 C -0.096 -0.070   -0.118
6 H 0.174 0.169   0.191
7 H 0.174 0.169   0.191
8 H 0.141 0.094   0.132
9 H 0.141 0.094   0.132


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 -0.634 0.634
CHELPG 0.000 0.000 -0.562 0.562
AIM        
ESP 0.000 0.000 -0.612 0.612


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> 112.509
(<r2>)1/2 10.607