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All results from a given calculation for C4H4S (Thiophene)

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-550.089869
Energy at 298.15K-550.094070
Nuclear repulsion energy196.365193
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 BLYP/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 3219 3201 1.28      
2 A1 3158 3140 3.30      
3 A1 1414 1406 14.85      
4 A1 1353 1345 0.06      
5 A1 1113 1107 2.56      
6 A1 1003 998 2.16      
7 A1 749 745 22.91      
8 A1 574 571 3.24      
9 A2 907 902 0.00      
10 A2 683 680 0.00      
11 A2 565 561 0.00      
12 B1 874 869 1.02      
13 B1 711 707 145.69      
14 B1 424 422 0.41      
15 B2 3215 3197 0.07      
16 B2 3143 3126 3.94      
17 B2 1523 1515 0.11      
18 B2 1262 1255 16.22      
19 B2 1106 1100 3.09      
20 B2 855 850 0.09      
21 B2 638 635 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 14243.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 14165.5 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 BLYP/3-21G
ABC
0.25327 0.16760 0.10086

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.255
C2 0.000 1.283 -0.047
C3 0.000 -1.283 -0.047
C4 0.000 0.725 -1.298
C5 0.000 -0.725 -1.298
H6 0.000 2.329 0.240
H7 0.000 -2.329 0.240
H8 0.000 1.318 -2.211
H9 0.000 -1.318 -2.211

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9
S11.82791.82792.65312.65312.54002.54003.70743.7074
C21.82792.56671.36982.36561.08393.62332.16393.3834
C31.82792.56672.36561.36983.62331.08393.38342.1639
C42.65311.36982.36561.44922.22193.41851.08882.2372
C52.65312.36561.36981.44923.41852.22192.23721.0888
H62.54001.08393.62332.22193.41854.65712.65084.3933
H72.54003.62331.08393.41852.22194.65714.39332.6508
H83.70742.16393.38341.08882.23722.65084.39332.6356
H93.70743.38342.16392.23721.08884.39332.65082.6356

picture of Thiophene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 111.331 S1 C2 H6 119.240
S1 C3 C5 111.331 S1 C3 H7 119.240
C2 S1 C3 89.189 C2 C4 C5 114.074
C2 C4 H8 122.913 C3 C5 C4 114.074
C3 C5 H9 122.913 C4 C2 H6 129.428
C4 C5 H9 123.013 C5 C3 H7 129.428
C5 C4 H8 123.013
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.480      
2 C -0.498      
3 C -0.498      
4 C -0.125      
5 C -0.125      
6 H 0.206      
7 H 0.206      
8 H 0.176      
9 H 0.176      


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 -0.900 0.900
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> 117.872
(<r2>)1/2 10.857