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

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-553.820443
Energy at 298.15K-553.827092
Nuclear repulsion energy214.909767
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 PBEPBE/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 3131 3099 16.72      
2 A1 2962 2932 0.19      
3 A1 1665 1648 6.81      
4 A1 1429 1415 6.09      
5 A1 1241 1228 0.68      
6 A1 1098 1087 0.33      
7 A1 949 939 0.03      
8 A1 701 694 2.41      
9 A1 499 494 0.00      
10 A2 2996 2965 0.00      
11 A2 1099 1087 0.00      
12 A2 931 921 0.00      
13 A2 917 907 0.00      
14 A2 370 366 0.00      
15 B1 2998 2967 16.27      
16 B1 1086 1075 9.41      
17 B1 867 858 0.06      
18 B1 660 653 35.19      
19 B1 101 100 3.99      
20 B2 3108 3076 2.88      
21 B2 2963 2932 62.89      
22 B2 1426 1411 0.24      
23 B2 1313 1300 1.86      
24 B2 1194 1182 7.12      
25 B2 956 946 8.30      
26 B2 797 789 0.29      
27 B2 629 622 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 19041.8 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 18845.7 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 PBEPBE/6-31G(2df,p)
ABC
0.21858 0.15857 0.09521

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.251
C2 0.000 1.353 -0.001
C3 0.000 -1.353 -0.001
C4 0.000 0.669 -1.338
C5 0.000 -0.669 -1.338
H6 -0.890 1.992 0.138
H7 0.890 1.992 0.138
H8 0.890 -1.992 0.138
H9 -0.890 -1.992 0.138
H10 0.000 1.272 -2.251
H11 0.000 -1.272 -2.251

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.84341.84342.67412.67412.44982.44982.44982.44983.72573.7257
C21.84342.70581.50182.42391.10461.10463.46443.46442.25113.4572
C31.84342.70582.42391.50183.46443.46441.10461.10463.45722.2511
C42.67411.50182.42391.33782.17272.17273.17053.17051.09412.1450
C52.67412.42391.50181.33783.17053.17052.17272.17272.14501.0941
H62.44981.10463.46442.17273.17051.77974.36423.98482.64854.1416
H72.44981.10463.46442.17273.17051.77973.98484.36422.64854.1416
H82.44983.46441.10463.17052.17274.36423.98481.77974.14162.6485
H92.44983.46441.10463.17052.17273.98484.36421.77974.14162.6485
H103.72572.25113.45721.09412.14502.64852.64854.14164.14162.5444
H113.72573.45722.25112.14501.09414.14164.14162.64852.64852.5444

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 105.690 S1 C2 H6 109.858
S1 C2 H7 109.858 S1 C3 C5 105.690
S1 C3 H8 109.858 S1 C3 H9 109.858
C2 S1 C3 94.431 C2 C4 C5 117.094
C2 C4 H10 119.443 C3 C5 C4 117.094
C3 C5 H11 119.443 C4 C2 H6 112.050
C4 C2 H7 112.050 C4 C5 H11 123.463
C5 C3 H8 112.050 C5 C3 H9 112.050
C5 C4 H10 123.463 H6 C2 H7 107.343
H8 C3 H9 107.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.138      
2 C -0.277      
3 C -0.277      
4 C -0.059      
5 C -0.059      
6 H 0.147      
7 H 0.147      
8 H 0.147      
9 H 0.147      
10 H 0.111      
11 H 0.111      


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 -1.905 1.905
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.087 0.000 0.000
y 0.000 -32.230 0.000
z 0.000 0.000 -38.711
Traceless
 xyz
x -3.616 0.000 0.000
y 0.000 6.669 0.000
z 0.000 0.000 -3.053
Polar
3z2-r2-6.106
x2-y2-6.857
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.880 0.000 0.000
y 0.000 10.398 0.000
z 0.000 0.000 9.259


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000