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

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-554.225091
Energy at 298.15K-554.231891
Nuclear repulsion energy216.317817
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 mPW1PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3215 3069 21.38      
2 A1 3064 2924 0.31      
3 A1 1735 1656 7.54      
4 A1 1507 1438 8.00      
5 A1 1314 1254 0.29      
6 A1 1151 1098 0.21      
7 A1 978 934 0.15      
8 A1 731 698 2.99      
9 A1 523 499 0.02      
10 A2 3100 2959 0.00      
11 A2 1169 1116 0.00      
12 A2 984 939 0.00      
13 A2 957 914 0.00      
14 A2 380 362 0.00      
15 B1 3102 2961 26.16      
16 B1 1153 1100 16.08      
17 B1 917 876 0.01      
18 B1 686 654 60.74      
19 B1 93 88 5.09      
20 B2 3191 3046 5.71      
21 B2 3064 2924 78.88      
22 B2 1501 1433 0.24      
23 B2 1377 1314 2.21      
24 B2 1276 1218 10.47      
25 B2 990 944 8.47      
26 B2 835 797 0.52      
27 B2 655 625 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 19823.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 18919.4 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 mPW1PW91/6-311G*
ABC
0.22216 0.16005 0.09637

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.246
C2 0.000 1.343 -0.000
C3 0.000 -1.343 -0.000
C4 0.000 0.663 -1.332
C5 0.000 -0.663 -1.332
H6 -0.883 1.974 0.132
H7 0.883 1.974 0.132
H8 0.883 -1.974 0.132
H9 -0.883 -1.974 0.132
H10 0.000 1.257 -2.239
H11 0.000 -1.257 -2.239

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.83231.83232.66132.66132.43232.43232.43232.43233.70523.7052
C21.83232.68641.49502.40751.09311.09313.43523.43522.24073.4316
C31.83232.68642.40751.49503.43523.43521.09311.09313.43162.2407
C42.66131.49502.40751.32562.15432.15433.14233.14231.08522.1239
C52.66132.40751.49501.32563.14233.14232.15432.15432.12391.0852
H62.43231.09313.43522.15433.14231.76584.32473.94782.63024.1042
H72.43231.09313.43522.15433.14231.76583.94784.32472.63024.1042
H82.43233.43521.09313.14232.15434.32473.94781.76584.10422.6302
H92.43233.43521.09313.14232.15433.94784.32471.76584.10422.6302
H103.70522.24073.43161.08522.12392.63022.63024.10424.10422.5145
H113.70523.43162.24072.12391.08524.10424.10422.63022.63022.5145

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 105.782 S1 C2 H6 109.906
S1 C2 H7 109.906 S1 C3 C5 105.782
S1 C3 H8 109.906 S1 C3 H9 109.906
C2 S1 C3 94.289 C2 C4 C5 117.074
C2 C4 H10 119.714 C3 C5 C4 117.074
C3 C5 H11 119.714 C4 C2 H6 111.752
C4 C2 H7 111.752 C4 C5 H11 123.213
C5 C3 H8 111.752 C5 C3 H9 111.752
C5 C4 H10 123.213 H6 C2 H7 107.746
H8 C3 H9 107.746
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.101      
2 C -0.605      
3 C -0.605      
4 C -0.180      
5 C -0.180      
6 H 0.261      
7 H 0.261      
8 H 0.261      
9 H 0.261      
10 H 0.214      
11 H 0.214      


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 -2.004 2.004
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.059 0.000 0.000
y 0.000 -32.542 0.000
z 0.000 0.000 -39.258
Traceless
 xyz
x -4.158 0.000 0.000
y 0.000 7.116 0.000
z 0.000 0.000 -2.957
Polar
3z2-r2-5.915
x2-y2-7.516
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> 128.287
(<r2>)1/2 11.326