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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: B3LYP/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-35.137717
Energy at 298.15K-35.142036
Nuclear repulsion energy75.589038
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/CEP-121G*
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 3233 3134 1.61      
2 A1 3195 3097 11.85      
3 A1 1429 1385 10.00      
4 A1 1383 1341 0.84      
5 A1 1094 1061 4.40      
6 A1 1036 1004 2.42      
7 A1 828 803 24.34      
8 A1 604 586 0.20      
9 A2 924 896 0.00      
10 A2 678 658 0.00      
11 A2 567 550 0.00      
12 B1 874 847 0.03      
13 B1 725 703 145.05      
14 B1 442 429 1.06      
15 B2 3231 3132 4.18      
16 B2 3182 3084 6.75      
17 B2 1535 1488 0.12      
18 B2 1262 1223 12.39      
19 B2 1097 1064 4.24      
20 B2 869 842 1.43      
21 B2 740 718 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 14464.2 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 14021.6 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/CEP-121G*
ABC
0.26229 0.17598 0.10532

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.475
C2 0.000 1.252 0.253
C3 0.000 -1.252 0.253
C4 0.000 0.720 -1.016
C5 0.000 -0.720 -1.016
H6 0.000 2.297 0.546
H7 0.000 -2.297 0.546
H8 0.000 1.327 -1.919
H9 0.000 -1.327 -1.919

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.74931.74932.59302.59302.47722.47723.64373.6437
C21.74932.50481.37672.34591.08443.56102.17353.3722
C31.74932.50482.34591.37673.56101.08443.37222.1735
C42.59301.37672.34591.44032.21953.39731.08752.2372
C52.59302.34591.37671.44033.39732.21952.23721.0875
H62.47721.08443.56102.21953.39734.59312.64884.3824
H72.47723.56101.08443.39732.21954.59314.38242.6488
H83.64372.17353.37221.08752.23722.64884.38242.6538
H93.64373.37222.17352.23721.08754.38242.64882.6538

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.537 S1 C2 H6 120.065
S1 C3 C5 111.537 S1 C3 H7 120.065
C2 S1 C3 91.442 C2 C4 C5 112.742
C2 C4 H8 123.346 C3 C5 C4 112.742
C3 C5 H9 123.346 C4 C2 H6 128.398
C4 C5 H9 123.911 C5 C3 H7 128.398
C5 C4 H8 123.911
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.043      
2 C -0.277      
3 C -0.277      
4 C -0.170      
5 C -0.170      
6 H 0.223      
7 H 0.223      
8 H 0.202      
9 H 0.202      


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 -0.563 0.563
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 4.640 0.000 0.000
y 0.000 9.741 0.000
z 0.000 0.000 10.783


<r2> (average value of r2) Å2
<r2> 82.234
(<r2>)1/2 9.068