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

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-551.284023
Energy at 298.15K-551.290614
Nuclear repulsion energy209.353936
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
4/u)
Dep P Dep U
1 A1 3121 3104 15.75      
2 A1 2998 2982 0.03      
3 A1 1647 1638 3.63      
4 A1 1487 1479 9.52      
5 A1 1248 1241 0.55      
6 A1 1152 1145 0.36      
7 A1 907 902 0.59      
8 A1 635 632 3.83      
9 A1 484 481 0.21      
10 A2 3040 3023 0.00      
11 A2 1140 1134 0.00      
12 A2 937 932 0.00      
13 A2 905 900 0.00      
14 A2 362 360 0.00      
15 B1 3043 3026 21.36      
16 B1 1132 1126 7.57      
17 B1 846 841 0.03      
18 B1 666 662 55.51      
19 B1 118 117 5.14      
20 B2 3095 3078 2.87      
21 B2 2998 2982 45.78      
22 B2 1488 1480 0.04      
23 B2 1356 1349 4.74      
24 B2 1209 1203 5.63      
25 B2 936 930 8.83      
26 B2 803 799 0.81      
27 B2 556 553 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 19154.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19049.6 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
0.20919 0.14785 0.08964

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 1.315
C2 0.000 1.398 -0.037
C3 0.000 -1.398 -0.037
C4 0.000 0.671 -1.370
C5 0.000 -0.671 -1.370
H6 -0.900 2.015 0.106
H7 0.900 2.015 0.106
H8 0.900 -2.015 0.106
H9 -0.900 -2.015 0.106
H10 0.000 1.265 -2.287
H11 0.000 -1.265 -2.287

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.94521.94522.76742.76742.51652.51652.51652.51653.81783.8178
C21.94522.79651.51822.46101.10071.10073.53323.53322.25393.4863
C31.94522.79652.46101.51823.53323.53321.10071.10073.48632.2539
C42.76741.51822.46101.34162.19022.19023.19453.19451.09292.1420
C52.76742.46101.51821.34163.19453.19452.19022.19022.14201.0929
H62.51651.10073.53322.19023.19451.80024.41444.03072.66504.1592
H72.51651.10073.53322.19023.19451.80024.03074.41442.66504.1592
H82.51653.53321.10073.19452.19024.41444.03071.80024.15922.6650
H92.51653.53321.10073.19452.19024.03074.41441.80024.15922.6650
H103.81782.25393.48631.09292.14202.66502.66504.15924.15922.5297
H113.81783.48632.25392.14201.09294.15924.15922.66502.66502.5297

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 105.413 S1 C2 H6 108.198
S1 C2 H7 108.198 S1 C3 C5 105.413
S1 C3 H8 108.198 S1 C3 H9 108.198
C2 S1 C3 91.916 C2 C4 C5 118.629
C2 C4 H10 118.445 C3 C5 C4 118.629
C3 C5 H11 118.445 C4 C2 H6 112.529
C4 C2 H7 112.529 C4 C5 H11 122.926
C5 C3 H8 112.529 C5 C3 H9 112.529
C5 C4 H10 122.926 H6 C2 H7 109.714
H8 C3 H9 109.714
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 0.200      
2 C -0.602      
3 C -0.602      
4 C -0.125      
5 C -0.125      
6 H 0.224      
7 H 0.224      
8 H 0.224      
9 H 0.224      
10 H 0.180      
11 H 0.180      


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 -2.219 2.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.125 0.000 0.000
y 0.000 -32.579 0.000
z 0.000 0.000 -39.459
Traceless
 xyz
x -4.105 0.000 0.000
y 0.000 7.213 0.000
z 0.000 0.000 -3.107
Polar
3z2-r2-6.215
x2-y2-7.545
xy0.000
xz0.000
yz0.000


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> 135.608
(<r2>)1/2 11.645