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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-553.810978
Energy at 298.15K-553.817618
Nuclear repulsion energy214.322803
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**
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 3140 3097 17.22      
2 A1 2973 2932 0.18      
3 A1 1674 1652 7.12      
4 A1 1447 1427 7.42      
5 A1 1253 1235 0.63      
6 A1 1108 1093 0.35      
7 A1 950 937 0.04      
8 A1 698 688 2.71      
9 A1 503 496 0.00      
10 A2 3008 2967 0.00      
11 A2 1108 1093 0.00      
12 A2 936 923 0.00      
13 A2 913 901 0.00      
14 A2 364 359 0.00      
15 B1 3010 2969 21.03      
16 B1 1095 1080 9.41      
17 B1 874 862 0.01      
18 B1 658 649 42.33      
19 B1 102 100 4.83      
20 B2 3117 3075 3.06      
21 B2 2973 2932 67.85      
22 B2 1442 1423 0.08      
23 B2 1323 1305 1.44      
24 B2 1211 1194 7.10      
25 B2 959 946 8.26      
26 B2 797 786 0.35      
27 B2 623 615 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 19129.4 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 18867.4 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 PBEPBE/6-31G**
ABC
0.21797 0.15723 0.09462

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.258
C2 0.000 1.355 -0.004
C3 0.000 -1.355 -0.004
C4 0.000 0.671 -1.342
C5 0.000 -0.671 -1.342
H6 -0.891 1.995 0.133
H7 0.891 1.995 0.133
H8 0.891 -1.995 0.133
H9 -0.891 -1.995 0.133
H10 0.000 1.272 -2.257
H11 0.000 -1.272 -2.257

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.85151.85152.68562.68562.45752.45752.45752.45753.73853.7385
C21.85152.70961.50322.42761.10511.10513.46853.46852.25483.4610
C31.85152.70962.42761.50323.46853.46851.10511.10513.46102.2548
C42.68561.50322.42761.34112.17282.17283.17353.17351.09502.1474
C52.68562.42761.50321.34113.17353.17352.17282.17282.14741.0950
H62.45751.10513.46852.17283.17351.78134.36893.98932.65044.1443
H72.45751.10513.46852.17283.17351.78133.98934.36892.65044.1443
H82.45753.46851.10513.17352.17284.36893.98931.78134.14432.6504
H92.45753.46851.10513.17352.17283.98934.36891.78134.14432.6504
H103.73852.25483.46101.09502.14742.65042.65044.14434.14432.5445
H113.73853.46102.25482.14741.09504.14434.14432.65042.65042.5445

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 105.894 S1 C2 H6 109.856
S1 C2 H7 109.856 S1 C3 C5 105.894
S1 C3 H8 109.856 S1 C3 H9 109.856
C2 S1 C3 94.060 C2 C4 C5 117.076
C2 C4 H10 119.591 C3 C5 C4 117.076
C3 C5 H11 119.591 C4 C2 H6 111.919
C4 C2 H7 111.919 C4 C5 H11 123.333
C5 C3 H8 111.919 C5 C3 H9 111.919
C5 C4 H10 123.333 H6 C2 H7 107.404
H8 C3 H9 107.404
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.087      
2 C -0.414      
3 C -0.414      
4 C -0.063      
5 C -0.063      
6 H 0.160      
7 H 0.160      
8 H 0.160      
9 H 0.160      
10 H 0.112      
11 H 0.112      


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 -1.965 1.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.367 0.000 0.000
y 0.000 -32.211 0.000
z 0.000 0.000 -38.771
Traceless
 xyz
x -3.876 0.000 0.000
y 0.000 6.858 0.000
z 0.000 0.000 -2.982
Polar
3z2-r2-5.964
x2-y2-7.156
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.326 0.000 0.000
y 0.000 10.231 0.000
z 0.000 0.000 8.904


<r2> (average value of r2) Å2
<r2> 129.929
(<r2>)1/2 11.399