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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-554.151866
Energy at 298.15K-554.158639
Nuclear repulsion energy216.494681
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 B1B95/6-31G*
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 3240 3076 17.82      
2 A1 3078 2922 0.24      
3 A1 1752 1663 6.83      
4 A1 1518 1441 6.99      
5 A1 1317 1250 0.36      
6 A1 1152 1094 0.44      
7 A1 985 935 0.05      
8 A1 734 697 2.85      
9 A1 519 493 0.03      
10 A2 3116 2958 0.00      
11 A2 1165 1106 0.00      
12 A2 986 936 0.00      
13 A2 961 912 0.00      
14 A2 377 358 0.00      
15 B1 3118 2960 20.70      
16 B1 1149 1091 10.17      
17 B1 921 874 0.12      
18 B1 689 654 44.73      
19 B1 92 87 4.84      
20 B2 3217 3054 3.62      
21 B2 3078 2922 66.50      
22 B2 1513 1437 0.06      
23 B2 1380 1310 1.62      
24 B2 1276 1211 7.49      
25 B2 995 945 7.67      
26 B2 828 786 0.54      
27 B2 657 624 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 19906.3 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 18897.1 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 B1B95/6-31G*
ABC
0.22226 0.16057 0.09657

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.243
C2 0.000 1.342 0.001
C3 0.000 -1.342 0.001
C4 0.000 0.664 -1.330
C5 0.000 -0.664 -1.330
H6 -0.882 1.975 0.134
H7 0.882 1.975 0.134
H8 0.882 -1.975 0.134
H9 -0.882 -1.975 0.134
H10 0.000 1.261 -2.237
H11 0.000 -1.261 -2.237

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.82811.82812.65752.65752.43122.43122.43122.43123.70093.7009
C21.82812.68351.49442.40731.09431.09433.43493.43492.23943.4323
C31.82812.68352.40731.49443.43493.43491.09431.09433.43232.2394
C42.65751.49442.40731.32732.15452.15453.14413.14411.08532.1270
C52.65752.40731.49441.32733.14413.14412.15452.15452.12701.0853
H62.43121.09433.43492.15453.14411.76494.32673.95042.62824.1069
H72.43121.09433.43492.15453.14411.76493.95044.32672.62824.1069
H82.43123.43491.09433.14412.15454.32673.95041.76494.10692.6282
H92.43123.43491.09433.14412.15453.95044.32671.76494.10692.6282
H103.70092.23943.43231.08532.12702.62822.62824.10694.10692.5212
H113.70093.43232.23942.12701.08534.10694.10692.62822.62822.5212

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 105.794 S1 C2 H6 110.045
S1 C2 H7 110.045 S1 C3 C5 105.794
S1 C3 H8 110.045 S1 C3 H9 110.045
C2 S1 C3 94.439 C2 C4 C5 116.987
C2 C4 H10 119.640 C3 C5 C4 116.987
C3 C5 H11 119.640 C4 C2 H6 111.738
C4 C2 H7 111.738 C4 C5 H11 123.373
C5 C3 H8 111.738 C5 C3 H9 111.738
C5 C4 H10 123.373 H6 C2 H7 107.498
H8 C3 H9 107.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.108      
2 C -0.508      
3 C -0.508      
4 C -0.119      
5 C -0.119      
6 H 0.202      
7 H 0.202      
8 H 0.202      
9 H 0.202      
10 H 0.168      
11 H 0.168      


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 -1.988 1.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.204 0.000 0.000
y 0.000 -32.070 0.000
z 0.000 0.000 -38.596
Traceless
 xyz
x -3.871 0.000 0.000
y 0.000 6.830 0.000
z 0.000 0.000 -2.959
Polar
3z2-r2-5.917
x2-y2-7.134
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.164 0.000 0.000
y 0.000 9.851 0.000
z 0.000 0.000 8.427


<r2> (average value of r2) Å2
<r2> 127.694
(<r2>)1/2 11.300