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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-554.212203
Energy at 298.15K-554.218991
Nuclear repulsion energy215.764783
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/aug-cc-pVDZ
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 3224 3089 14.79      
2 A1 3059 2931 0.48      
3 A1 1730 1658 9.08      
4 A1 1469 1408 6.13      
5 A1 1285 1231 0.10      
6 A1 1133 1085 0.54      
7 A1 978 938 0.36      
8 A1 729 699 2.61      
9 A1 517 496 0.00      
10 A2 3102 2973 0.00      
11 A2 1140 1093 0.00      
12 A2 967 926 0.00      
13 A2 941 902 0.00      
14 A2 383 367 0.00      
15 B1 3104 2974 11.62      
16 B1 1124 1077 11.86      
17 B1 895 858 1.38      
18 B1 676 648 47.92      
19 B1 92 88 4.27      
20 B2 3200 3067 3.14      
21 B2 3059 2932 67.70      
22 B2 1463 1402 0.30      
23 B2 1365 1308 2.36      
24 B2 1241 1189 5.57      
25 B2 987 945 10.25      
26 B2 828 793 0.92      
27 B2 654 627 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 19671.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 18851.5 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/aug-cc-pVDZ
ABC
0.22043 0.15973 0.09597

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.247
C2 0.000 1.348 -0.000
C3 0.000 -1.348 -0.000
C4 0.000 0.666 -1.332
C5 0.000 -0.666 -1.332
H6 -0.888 1.981 0.133
H7 0.888 1.981 0.133
H8 0.888 -1.981 0.133
H9 -0.888 -1.981 0.133
H10 0.000 1.261 -2.246
H11 0.000 -1.261 -2.246

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.83671.83672.66362.66362.43992.43992.43992.43993.71353.7135
C21.83672.69651.49632.41471.09871.09873.44803.44802.24713.4427
C31.83672.69652.41471.49633.44803.44801.09871.09873.44272.2471
C42.66361.49632.41471.33202.15972.15973.15293.15291.09052.1330
C52.66362.41471.49631.33203.15293.15292.15972.15972.13301.0905
H62.43991.09873.44802.15973.15291.77704.34163.96132.63924.1182
H72.43991.09873.44802.15973.15291.77703.96134.34162.63924.1182
H82.43993.44801.09873.15292.15974.34163.96131.77704.11822.6392
H92.43993.44801.09873.15292.15973.96134.34161.77704.11822.6392
H103.71352.24713.44271.09052.13302.63922.63924.11824.11822.5229
H113.71353.44272.24712.13301.09054.11824.11822.63922.63922.5229

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 105.646 S1 C2 H6 109.882
S1 C2 H7 109.882 S1 C3 C5 105.646
S1 C3 H8 109.882 S1 C3 H9 109.882
C2 S1 C3 94.458 C2 C4 C5 117.125
C2 C4 H10 119.783 C3 C5 C4 117.125
C3 C5 H11 119.783 C4 C2 H6 111.746
C4 C2 H7 111.746 C4 C5 H11 123.092
C5 C3 H8 111.746 C5 C3 H9 111.746
C5 C4 H10 123.092 H6 C2 H7 107.933
H8 C3 H9 107.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.500      
2 C -0.127      
3 C -0.127      
4 C 0.361      
5 C 0.361      
6 H -0.033      
7 H -0.033      
8 H -0.033      
9 H -0.033      
10 H -0.417      
11 H -0.417      


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 -1.846 1.846
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.914 0.000 0.000
y 0.000 -32.707 0.000
z 0.000 0.000 -39.424
Traceless
 xyz
x -3.848 0.000 0.000
y 0.000 6.962 0.000
z 0.000 0.000 -3.113
Polar
3z2-r2-6.227
x2-y2-7.207
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.483 0.000 0.000
y 0.000 11.364 0.000
z 0.000 0.000 10.389


<r2> (average value of r2) Å2
<r2> 128.824
(<r2>)1/2 11.350