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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-551.395860
Energy at 298.15K-551.402616
Nuclear repulsion energy211.315501
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 3210 3097 11.76      
2 A1 3084 2976 0.19      
3 A1 1711 1651 3.25      
4 A1 1527 1473 9.89      
5 A1 1293 1247 0.05      
6 A1 1186 1145 0.59      
7 A1 939 906 0.62      
8 A1 669 645 4.24      
9 A1 505 488 0.07      
10 A2 3129 3019 0.00      
11 A2 1184 1142 0.00      
12 A2 989 954 0.00      
13 A2 935 902 0.00      
14 A2 378 364 0.00      
15 B1 3132 3022 15.36      
16 B1 1173 1131 8.10      
17 B1 880 849 0.44      
18 B1 695 671 60.24      
19 B1 119 114 5.40      
20 B2 3184 3072 1.61      
21 B2 3084 2976 38.74      
22 B2 1526 1473 0.53      
23 B2 1396 1347 5.20      
24 B2 1257 1213 5.15      
25 B2 968 934 9.63      
26 B2 832 803 1.09      
27 B2 591 570 0.98      

Unscaled Zero Point Vibrational Energy (zpe) 19786.8 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 19092.3 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
0.21310 0.15080 0.09139

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 1.299
C2 0.000 1.384 -0.032
C3 0.000 -1.384 -0.032
C4 0.000 0.665 -1.359
C5 0.000 -0.665 -1.359
H6 -0.894 1.998 0.109
H7 0.894 1.998 0.109
H8 0.894 -1.998 0.109
H9 -0.894 -1.998 0.109
H10 0.000 1.256 -2.269
H11 0.000 -1.256 -2.269

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.92061.92062.74042.74042.49142.49142.49142.49143.78323.7832
C21.92062.76851.50922.44181.09301.09303.50093.50092.24093.4609
C31.92062.76852.44181.50923.50093.50091.09301.09303.46092.2409
C42.74041.50922.44181.33102.17432.17433.16953.16951.08512.1264
C52.74042.44181.50921.33103.16953.16952.17432.17432.12641.0851
H62.49141.09303.50092.17433.16951.78724.37703.99552.64634.1282
H72.49141.09303.50092.17433.16951.78723.99554.37702.64634.1282
H82.49143.50091.09303.16952.17434.37703.99551.78724.12822.6463
H92.49143.50091.09303.16952.17433.99554.37701.78724.12822.6463
H103.78322.24093.46091.08512.12642.64632.64634.12824.12822.5126
H113.78323.46092.24092.12641.08514.12824.12822.64632.64632.5126

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 105.443 S1 C2 H6 108.381
S1 C2 H7 108.381 S1 C3 C5 105.443
S1 C3 H8 108.381 S1 C3 H9 108.381
C2 S1 C3 92.233 C2 C4 C5 118.441
C2 C4 H10 118.573 C3 C5 C4 118.441
C3 C5 H11 118.573 C4 C2 H6 112.364
C4 C2 H7 112.364 C4 C5 H11 122.986
C5 C3 H8 112.364 C5 C3 H9 112.364
C5 C4 H10 122.986 H6 C2 H7 109.680
H8 C3 H9 109.680
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 0.232     -0.305
2 C -0.649     0.054
3 C -0.649     0.054
4 C -0.146     -0.217
5 C -0.146     -0.217
6 H 0.239     0.081
7 H 0.239     0.082
8 H 0.239     0.082
9 H 0.239     0.081
10 H 0.201     0.153
11 H 0.201     0.153


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 -2.267 2.267
CHELPG        
AIM        
ESP 0.014 0.000 -2.254 2.254


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.118 0.000 0.000
y 0.000 -32.529 0.000
z 0.000 0.000 -39.526
Traceless
 xyz
x -4.090 0.000 0.000
y 0.000 7.293 0.000
z 0.000 0.000 -3.202
Polar
3z2-r2-6.405
x2-y2-7.589
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.268 0.001 0.001
y 0.001 9.699 -0.000
z 0.001 -0.000 4.357


<r2> (average value of r2) Å2
<r2> 133.510
(<r2>)1/2 11.555