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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: HF/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 HF/CEP-121G*
 hartrees
Energy at 0K-34.202598
Energy at 298.15K-34.207232
Nuclear repulsion energy76.305718
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 HF/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 3419 3089 3.19      
2 A1 3385 3058 11.78      
3 A1 1558 1407 23.35      
4 A1 1511 1365 0.02      
5 A1 1191 1076 5.26      
6 A1 1090 984 1.31      
7 A1 883 798 36.08      
8 A1 651 588 0.91      
9 A2 1042 942 0.00      
10 A2 794 717 0.00      
11 A2 606 548 0.00      
12 B1 1018 920 0.48      
13 B1 805 728 167.35      
14 B1 474 428 0.05      
15 B2 3416 3086 6.42      
16 B2 3370 3045 7.46      
17 B2 1698 1534 0.01      
18 B2 1389 1254 10.67      
19 B2 1196 1080 3.03      
20 B2 943 852 1.69      
21 B2 801 723 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 15619.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 14110.4 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 HF/CEP-121G*
ABC
0.26554 0.17992 0.10725

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.461
C2 0.000 1.241 0.247
C3 0.000 -1.241 0.247
C4 0.000 0.723 -1.002
C5 0.000 -0.723 -1.002
H6 0.000 2.276 0.531
H7 0.000 -2.276 0.531
H8 0.000 1.322 -1.896
H9 0.000 -1.322 -1.896

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.73611.73612.56732.56732.45932.45933.60783.6078
C21.73612.48261.35292.32801.07323.52912.14483.3409
C31.73612.48262.32801.35293.52911.07323.34092.1448
C42.56731.35292.32801.44582.18243.36831.07572.2312
C52.56732.32801.35291.44583.36832.18242.23121.0757
H62.45931.07323.52912.18243.36834.55282.60764.3397
H72.45933.52911.07323.36832.18244.55284.33972.6076
H83.60782.14483.34091.07572.23122.60764.33972.6431
H93.60783.34092.14482.23121.07574.33972.60762.6431

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.827 S1 C2 H6 120.340
S1 C3 C5 111.827 S1 C3 H7 120.340
C2 S1 C3 91.283 C2 C4 C5 112.531
C2 C4 H8 123.649 C3 C5 C4 112.531
C3 C5 H9 123.649 C4 C2 H6 127.833
C4 C5 H9 123.819 C5 C3 H7 127.833
C5 C4 H8 123.819
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.004      
2 C -0.277      
3 C -0.277      
4 C -0.222      
5 C -0.222      
6 H 0.258      
7 H 0.258      
8 H 0.239      
9 H 0.239      


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 -0.857 0.857
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 4.625 0.000 0.000
y 0.000 8.865 0.000
z 0.000 0.000 10.309


<r2> (average value of r2) Å2
<r2> 81.374
(<r2>)1/2 9.021