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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-554.107162
Energy at 298.15K-554.113940
Nuclear repulsion energy215.651180
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 B3PW91/6-31G**
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 3217 3083 16.98      
2 A1 3054 2927 0.21      
3 A1 1732 1660 6.71      
4 A1 1494 1431 7.04      
5 A1 1300 1246 0.29      
6 A1 1145 1097 0.44      
7 A1 973 932 0.08      
8 A1 726 696 2.79      
9 A1 519 497 0.01      
10 A2 3094 2965 0.00      
11 A2 1151 1104 0.00      
12 A2 974 933 0.00      
13 A2 952 912 0.00      
14 A2 377 361 0.00      
15 B1 3096 2967 20.73      
16 B1 1136 1089 9.98      
17 B1 909 871 0.12      
18 B1 683 655 45.00      
19 B1 102 98 4.97      
20 B2 3194 3061 3.14      
21 B2 3054 2927 67.74      
22 B2 1489 1427 0.02      
23 B2 1368 1311 1.88      
24 B2 1260 1208 6.96      
25 B2 985 944 8.39      
26 B2 826 792 0.55      
27 B2 650 623 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 19729.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 18908.3 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 B3PW91/6-31G**
ABC
0.22069 0.15912 0.09577

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.250
C2 0.000 1.347 -0.001
C3 0.000 -1.347 -0.001
C4 0.000 0.666 -1.336
C5 0.000 -0.666 -1.336
H6 -0.885 1.981 0.133
H7 0.885 1.981 0.133
H8 0.885 -1.981 0.133
H9 -0.885 -1.981 0.133
H10 0.000 1.263 -2.244
H11 0.000 -1.263 -2.244

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.83811.83812.66962.66962.44012.44012.44012.44013.71493.7149
C21.83812.69451.49882.41521.09651.09653.44653.44652.24493.4416
C31.83812.69452.41521.49883.44653.44651.09651.09653.44162.2449
C42.66961.49882.41521.33122.16102.16103.15353.15351.08712.1316
C52.66962.41521.49881.33123.15353.15352.16102.16102.13161.0871
H62.44011.09653.44652.16103.15351.76924.33933.96232.63614.1178
H72.44011.09653.44652.16103.15351.76923.96234.33932.63614.1178
H82.44013.44651.09653.15352.16104.33933.96231.76924.11782.6361
H92.44013.44651.09653.15352.16103.96234.33931.76924.11782.6361
H103.71492.24493.44161.08712.13162.63612.63614.11784.11782.5256
H113.71493.44162.24492.13161.08714.11784.11782.63612.63612.5256

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 105.814 S1 C2 H6 109.921
S1 C2 H7 109.921 S1 C3 C5 105.814
S1 C3 H8 109.921 S1 C3 H9 109.921
C2 S1 C3 94.269 C2 C4 C5 117.051
C2 C4 H10 119.629 C3 C5 C4 117.051
C3 C5 H11 119.629 C4 C2 H6 111.815
C4 C2 H7 111.815 C4 C5 H11 123.320
C5 C3 H8 111.815 C5 C3 H9 111.815
C5 C4 H10 123.320 H6 C2 H7 107.563
H8 C3 H9 107.563
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.098      
2 C -0.433      
3 C -0.433      
4 C -0.087      
5 C -0.087      
6 H 0.170      
7 H 0.170      
8 H 0.170      
9 H 0.170      
10 H 0.132      
11 H 0.132      


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 -1.996 1.996
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.265 0.000 0.000
y 0.000 -32.031 0.000
z 0.000 0.000 -38.668
Traceless
 xyz
x -3.915 0.000 0.000
y 0.000 6.935 0.000
z 0.000 0.000 -3.020
Polar
3z2-r2-6.040
x2-y2-7.234
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> 128.544
(<r2>)1/2 11.338