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All results from a given calculation for C4H6S (Thiophene, 2,5-dihydro-)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-553.852081
Energy at 298.15K-553.858867
HF Energy-553.641076
Nuclear repulsion energy215.293398
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 B2PLYP/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 3238 3074 18.10      
2 A1 3087 2930 0.18      
3 A1 1725 1638 6.04      
4 A1 1541 1463 6.33      
5 A1 1329 1261 0.84      
6 A1 1165 1105 0.40      
7 A1 976 926 0.05      
8 A1 727 690 2.66      
9 A1 523 496 0.02      
10 A2 3125 2966 0.00      
11 A2 1173 1114 0.00      
12 A2 994 944 0.00      
13 A2 955 907 0.00      
14 A2 376 357 0.00      
15 B1 3127 2968 23.60      
16 B1 1160 1101 10.01      
17 B1 936 888 0.07      
18 B1 689 654 42.30      
19 B1 95 91 4.70      
20 B2 3216 3053 3.79      
21 B2 3087 2931 66.29      
22 B2 1537 1459 0.47      
23 B2 1391 1321 2.38      
24 B2 1291 1225 7.63      
25 B2 994 944 6.39      
26 B2 834 792 0.67      
27 B2 651 618 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 19970.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 18956.2 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 B2PLYP/6-31G*
ABC
0.21997 0.15847 0.09539

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.253
C2 0.000 1.350 -0.001
C3 0.000 -1.350 -0.001
C4 0.000 0.667 -1.339
C5 0.000 -0.667 -1.339
H6 -0.884 1.982 0.132
H7 0.884 1.982 0.132
H8 0.884 -1.982 0.132
H9 -0.884 -1.982 0.132
H10 0.000 1.264 -2.246
H11 0.000 -1.264 -2.246

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.84231.84232.67572.67572.44262.44262.44262.44263.71953.7195
C21.84232.70051.50242.42051.09451.09453.45023.45022.24653.4458
C31.84232.70052.42051.50243.45023.45021.09451.09453.44582.2465
C42.67571.50242.42051.33372.16182.16183.15613.15611.08582.1332
C52.67572.42051.50241.33373.15613.15612.16182.16182.13321.0858
H62.44261.09453.45022.16183.15611.76754.34063.96442.63614.1195
H72.44261.09453.45022.16183.15611.76753.96444.34062.63614.1195
H82.44263.45021.09453.15612.16184.34063.96441.76754.11952.6361
H92.44263.45021.09453.15612.16183.96444.34061.76754.11952.6361
H103.71952.24653.44581.08582.13322.63612.63614.11954.11952.5280
H113.71953.44582.24652.13321.08584.11954.11952.63612.63612.5280

picture of Thiophene, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C4 105.811 S1 C2 H6 109.926
S1 C2 H7 109.926 S1 C3 C5 105.811
S1 C3 H8 109.926 S1 C3 H9 109.926
C2 S1 C3 94.263 C2 C4 C5 117.057
C2 C4 H10 119.580 C3 C5 C4 117.057
C3 C5 H11 119.580 C4 C2 H6 111.745
C4 C2 H7 111.745 C4 C5 H11 123.363
C5 C3 H8 111.745 C5 C3 H9 111.745
C5 C4 H10 123.363 H6 C2 H7 107.694
H8 C3 H9 107.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.096      
2 C -0.472      
3 C -0.472      
4 C -0.125      
5 C -0.125      
6 H 0.190      
7 H 0.190      
8 H 0.190      
9 H 0.190      
10 H 0.168      
11 H 0.168      


Electric dipole moments


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 5.129 0.000 0.000
y 0.000 9.771 0.000
z 0.000 0.000 8.399


<r2> (average value of r2) Å2
<r2> 129.203
(<r2>)1/2 11.367