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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-552.792966
Energy at 298.15K-552.787914
HF Energy-553.021345
Nuclear repulsion energy202.400961
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(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 3260 3146 1.97      
2 A1 3219 3107 4.79      
3 A1 1448 1398 9.59      
4 A1 1395 1346 0.44      
5 A1 1105 1067 2.96      
6 A1 1058 1021 1.91      
7 A1 837 807 22.33      
8 A1 612 591 0.24      
9 A2 927 894 0.00      
10 A2 696 672 0.00      
11 A2 580 560 0.00      
12 B1 884 853 0.05      
13 B1 739 713 90.44      
14 B1 459 442 0.62      
15 B2 3258 3144 0.45      
16 B2 3205 3093 4.40      
17 B2 1558 1504 0.09      
18 B2 1273 1229 10.63      
19 B2 1109 1070 2.61      
20 B2 874 843 0.59      
21 B2 752 726 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 14623.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 14111.8 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(2df,p)
ABC
0.26735 0.18015 0.10763

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.193
C2 0.000 1.240 -0.009
C3 0.000 -1.240 -0.009
C4 0.000 0.713 -1.268
C5 0.000 -0.713 -1.268
H6 0.000 2.278 0.288
H7 0.000 -2.278 0.288
H8 0.000 1.316 -2.168
H9 0.000 -1.316 -2.168

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.72671.72672.56242.56242.45072.45073.60893.6089
C21.72672.48031.36562.32411.07923.53032.16033.3458
C31.72672.48032.32411.36563.53031.07923.34582.1603
C42.56241.36562.32411.42582.20723.37151.08272.2191
C52.56242.32411.36561.42583.37152.20722.21911.0827
H62.45071.07923.53032.20723.37154.55542.63764.3526
H72.45073.53031.07923.37152.20724.55544.35262.6376
H83.60892.16033.34581.08272.21912.63764.35262.6317
H93.60893.34582.16032.21911.08274.35262.63762.6317

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.666 S1 C2 H6 119.966
S1 C3 C5 111.666 S1 C3 H7 119.966
C2 S1 C3 91.536 C2 C4 C5 112.566
C2 C4 H8 123.731 C3 C5 C4 112.566
C3 C5 H9 123.731 C4 C2 H6 128.368
C4 C5 H9 123.703 C5 C3 H7 128.368
C5 C4 H8 123.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.013      
2 C -0.135      
3 C -0.135      
4 C -0.093      
5 C -0.093      
6 H 0.128      
7 H 0.128      
8 H 0.106      
9 H 0.106      


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 -0.638 0.638
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> 111.803
(<r2>)1/2 10.574