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

using model chemistry: B1B95/CEP-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/CEP-31G*
 hartrees
Energy at 0K-36.256936
Energy at 298.15K-36.263569
Nuclear repulsion energy85.750714
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/CEP-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 3217 3079 22.26      
2 A1 3074 2943 0.18      
3 A1 1732 1658 9.37      
4 A1 1481 1418 6.62      
5 A1 1292 1236 0.73      
6 A1 1113 1066 0.14      
7 A1 977 935 0.05      
8 A1 730 698 2.19      
9 A1 502 480 0.20      
10 A2 3120 2987 0.00      
11 A2 1128 1080 0.00      
12 A2 962 921 0.00      
13 A2 934 894 0.00      
14 A2 342 327 0.00      
15 B1 3123 2989 39.55      
16 B1 1115 1067 16.57      
17 B1 888 850 0.53      
18 B1 681 652 72.09      
19 B1 77 74 4.74      
20 B2 3186 3050 4.59      
21 B2 3075 2943 78.14      
22 B2 1475 1411 0.39      
23 B2 1345 1288 1.33      
24 B2 1247 1193 10.05      
25 B2 985 943 7.84      
26 B2 804 769 0.37      
27 B2 650 622 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 19626.0 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 18786.0 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/CEP-31G*
ABC
0.21635 0.15735 0.09436

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.253
C2 0.000 1.359 0.006
C3 0.000 -1.359 0.006
C4 0.000 0.679 -1.347
C5 0.000 -0.679 -1.347
H6 -0.891 1.994 0.140
H7 0.891 1.994 0.140
H8 0.891 -1.994 0.140
H9 -0.891 -1.994 0.140
H10 0.000 1.279 -2.262
H11 0.000 -1.279 -2.262

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.84431.84432.68692.68692.45172.45172.45172.45173.74043.7404
C21.84432.71771.51382.44611.10271.10273.47213.47212.26933.4787
C31.84432.71772.44611.51383.47213.47211.10271.10273.47872.2693
C42.68691.51382.44611.35842.17552.17553.18603.18601.09432.1615
C52.68692.44611.51381.35843.18603.18602.17552.17552.16151.0943
H62.45171.10273.47212.17553.18601.78264.36873.98842.65964.1564
H72.45171.10273.47212.17553.18601.78263.98844.36872.65964.1564
H82.45173.47211.10273.18602.17554.36873.98841.78264.15642.6596
H92.45173.47211.10273.18602.17553.98844.36871.78264.15642.6596
H103.74042.26933.47871.09432.16152.65962.65964.15644.15642.5579
H113.74043.47872.26932.16151.09434.15644.15642.65962.65962.5579

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 105.863 S1 C2 H6 110.033
S1 C2 H7 110.033 S1 C3 C5 105.863
S1 C3 H8 110.033 S1 C3 H9 110.033
C2 S1 C3 94.917 C2 C4 C5 116.679
C2 C4 H10 120.087 C3 C5 C4 116.679
C3 C5 H11 120.087 C4 C2 H6 111.532
C4 C2 H7 111.532 C4 C5 H11 123.234
C5 C3 H8 111.532 C5 C3 H9 111.532
C5 C4 H10 123.234 H6 C2 H7 107.857
H8 C3 H9 107.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.085      
2 C -0.311      
3 C -0.311      
4 C -0.265      
5 C -0.265      
6 H 0.169      
7 H 0.169      
8 H 0.169      
9 H 0.169      
10 H 0.281      
11 H 0.281      


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 -1.957 1.957
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.583 0.000 0.000
y 0.000 -30.845 0.000
z 0.000 0.000 -37.732
Traceless
 xyz
x -4.295 0.000 0.000
y 0.000 7.313 0.000
z 0.000 0.000 -3.018
Polar
3z2-r2-6.036
x2-y2-7.738
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.761 0.000 0.000
y 0.000 10.197 0.000
z 0.000 0.000 8.852


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000