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

using model chemistry: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-551.502943
Energy at 298.15K-551.509728
Nuclear repulsion energy214.050206
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 B3LYP/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 3217 3094 12.84      
2 A1 3056 2940 0.46      
3 A1 1710 1645 3.08      
4 A1 1537 1479 9.46      
5 A1 1304 1254 0.29      
6 A1 1184 1139 0.68      
7 A1 938 902 0.14      
8 A1 698 672 3.32      
9 A1 526 506 0.02      
10 A2 3090 2973 0.00      
11 A2 1196 1151 0.00      
12 A2 992 954 0.00      
13 A2 961 924 0.00      
14 A2 379 364 0.00      
15 B1 3092 2975 19.51      
16 B1 1180 1135 8.28      
17 B1 911 877 0.08      
18 B1 698 672 60.32      
19 B1 104 100 4.44      
20 B2 3190 3069 1.89      
21 B2 3056 2940 51.56      
22 B2 1536 1478 0.20      
23 B2 1391 1338 4.43      
24 B2 1275 1227 3.59      
25 B2 960 924 9.09      
26 B2 838 806 0.22      
27 B2 623 599 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 19820.6 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 19067.4 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 B3LYP/3-21G*
ABC
0.21836 0.15575 0.09415

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.265
C2 0.000 1.358 -0.003
C3 0.000 -1.358 -0.003
C4 0.000 0.665 -1.350
C5 0.000 -0.665 -1.350
H6 -0.890 1.985 0.126
H7 0.890 1.985 0.126
H8 0.890 -1.985 0.126
H9 -0.890 -1.985 0.126
H10 0.000 1.267 -2.253
H11 0.000 -1.267 -2.253

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.85831.85832.69862.69862.45492.45492.45492.45493.73903.7390
C21.85832.71661.51502.43101.09561.09563.46163.46162.25163.4571
C31.85832.71662.43101.51503.46163.46161.09561.09563.45712.2516
C42.69861.51502.43101.33052.17072.17073.16123.16121.08452.1323
C52.69862.43101.51501.33053.16123.16122.17072.17072.13231.0845
H62.45491.09563.46162.17073.16121.77924.34963.96912.63954.1257
H72.45491.09563.46162.17073.16121.77923.96914.34962.63954.1257
H82.45493.46161.09563.16122.17074.34963.96911.77924.12572.6395
H92.45493.46161.09563.16122.17073.96914.34961.77924.12572.6395
H103.73902.25163.45711.08452.13232.63952.63954.12574.12572.5331
H113.73903.45712.25162.13231.08454.12574.12572.63952.63952.5331

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 105.812 S1 C2 H6 109.708
S1 C2 H7 109.708 S1 C3 C5 105.812
S1 C3 H8 109.708 S1 C3 H9 109.708
C2 S1 C3 93.930 C2 C4 C5 117.223
C2 C4 H10 119.105 C3 C5 C4 117.223
C3 C5 H11 119.105 C4 C2 H6 111.498
C4 C2 H7 111.498 C4 C5 H11 123.672
C5 C3 H8 111.498 C5 C3 H9 111.498
C5 C4 H10 123.672 H6 C2 H7 108.583
H8 C3 H9 108.583
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.165      
2 C -0.577      
3 C -0.577      
4 C -0.161      
5 C -0.161      
6 H 0.229      
7 H 0.229      
8 H 0.229      
9 H 0.229      
10 H 0.198      
11 H 0.198      


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 -1.975 1.975
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.028 0.000 0.000
y 0.000 -32.521 0.000
z 0.000 0.000 -38.883
Traceless
 xyz
x -4.326 0.000 0.000
y 0.000 6.935 0.000
z 0.000 0.000 -2.609
Polar
3z2-r2-5.218
x2-y2-7.507
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.040 -0.000 -0.001
y -0.000 9.557 0.001
z -0.001 0.001 4.595


<r2> (average value of r2) Å2
<r2> 130.478
(<r2>)1/2 11.423