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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-554.165426
Energy at 298.15K-554.172156
Nuclear repulsion energy216.243895
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 B1B95/6-31+G**
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 3223 3083 16.51      
2 A1 3063 2930 0.27      
3 A1 1728 1653 10.90      
4 A1 1486 1421 7.62      
5 A1 1297 1241 0.42      
6 A1 1140 1090 0.23      
7 A1 977 934 0.09      
8 A1 725 694 2.79      
9 A1 515 492 0.05      
10 A2 3103 2968 0.00      
11 A2 1146 1096 0.00      
12 A2 975 933 0.00      
13 A2 948 907 0.00      
14 A2 373 357 0.00      
15 B1 3105 2970 11.64      
16 B1 1130 1081 12.97      
17 B1 906 867 1.19      
18 B1 682 652 54.70      
19 B1 78 75 5.36      
20 B2 3200 3061 3.45      
21 B2 3063 2930 63.43      
22 B2 1480 1416 0.21      
23 B2 1363 1304 1.89      
24 B2 1258 1204 7.98      
25 B2 985 943 9.19      
26 B2 820 784 0.57      
27 B2 649 621 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19708.2 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 18852.9 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 B1B95/6-31+G**
ABC
0.22167 0.16020 0.09634

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.245
C2 0.000 1.344 0.001
C3 0.000 -1.344 0.001
C4 0.000 0.665 -1.331
C5 0.000 -0.665 -1.331
H6 -0.884 1.975 0.134
H7 0.884 1.975 0.134
H8 0.884 -1.975 0.134
H9 -0.884 -1.975 0.134
H10 0.000 1.260 -2.240
H11 0.000 -1.260 -2.240

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.83141.83142.66052.66052.43232.43232.43232.43233.70523.7052
C21.83142.68801.49502.41061.09421.09423.43733.43732.24183.4352
C31.83142.68802.41061.49503.43733.43731.09421.09423.43522.2418
C42.66051.49502.41061.33052.15482.15483.14623.14621.08582.1289
C52.66052.41061.49501.33053.14623.14622.15482.15482.12891.0858
H62.43231.09423.43732.15483.14621.76794.32763.95002.63164.1086
H72.43231.09423.43732.15483.14621.76793.95004.32762.63164.1086
H82.43233.43731.09423.14622.15484.32763.95001.76794.10862.6316
H92.43233.43731.09423.14622.15483.95004.32761.76794.10862.6316
H103.70522.24183.43521.08582.12892.63162.63164.10864.10862.5204
H113.70523.43522.24182.12891.08584.10864.10862.63162.63162.5204

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 105.785 S1 C2 H6 109.914
S1 C2 H7 109.914 S1 C3 C5 105.785
S1 C3 H8 109.914 S1 C3 H9 109.914
C2 S1 C3 94.424 C2 C4 C5 117.003
C2 C4 H10 119.771 C3 C5 C4 117.003
C3 C5 H11 119.771 C4 C2 H6 111.728
C4 C2 H7 111.728 C4 C5 H11 123.226
C5 C3 H8 111.728 C5 C3 H9 111.728
C5 C4 H10 123.226 H6 C2 H7 107.772
H8 C3 H9 107.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.005      
2 C -0.541      
3 C -0.541      
4 C -0.011      
5 C -0.011      
6 H 0.197      
7 H 0.197      
8 H 0.197      
9 H 0.197      
10 H 0.156      
11 H 0.156      


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 -1.931 1.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.022 0.000 0.000
y 0.000 -32.536 0.000
z 0.000 0.000 -39.510
Traceless
 xyz
x -3.999 0.000 0.000
y 0.000 7.230 0.000
z 0.000 0.000 -3.231
Polar
3z2-r2-6.461
x2-y2-7.486
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.935 0.000 0.000
y 0.000 10.731 0.000
z 0.000 0.000 9.467


<r2> (average value of r2) Å2
<r2> 128.383
(<r2>)1/2 11.331