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

using model chemistry: LSDA/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/6-31G(2df,p)
 hartrees
Energy at 0K-552.282434
Energy at 298.15K-552.289104
Nuclear repulsion energy217.203945
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 LSDA/6-31G(2df,p)
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 3138 3088 8.01      
2 A1 2961 2914 0.62      
3 A1 1696 1669 5.66      
4 A1 1406 1383 7.63      
5 A1 1237 1218 0.01      
6 A1 1085 1067 0.29      
7 A1 974 958 0.08      
8 A1 729 718 2.11      
9 A1 510 502 0.02      
10 A2 2996 2948 0.00      
11 A2 1091 1073 0.00      
12 A2 934 919 0.00      
13 A2 914 899 0.00      
14 A2 375 369 0.00      
15 B1 2998 2950 7.71      
16 B1 1074 1057 9.44      
17 B1 857 843 0.01      
18 B1 658 648 38.93      
19 B1 91 89 4.40      
20 B2 3115 3065 0.51      
21 B2 2962 2914 45.58      
22 B2 1402 1380 0.39      
23 B2 1310 1289 1.41      
24 B2 1188 1169 7.76      
25 B2 971 955 10.00      
26 B2 806 793 0.10      
27 B2 654 643 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19064.1 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 18759.1 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 LSDA/6-31G(2df,p)
ABC
0.22281 0.16273 0.09751

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.233
C2 0.000 1.336 0.002
C3 0.000 -1.336 0.002
C4 0.000 0.664 -1.320
C5 0.000 -0.664 -1.320
H6 -0.888 1.980 0.139
H7 0.888 1.980 0.139
H8 0.888 -1.980 0.139
H9 -0.888 -1.980 0.139
H10 0.000 1.267 -2.234
H11 0.000 -1.267 -2.234

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.81721.81722.63832.63832.43082.43082.43082.43083.69163.6916
C21.81722.67201.48232.39751.10591.10593.43593.43592.23673.4311
C31.81722.67202.39751.48233.43593.43591.10591.10593.43112.2367
C42.63831.48232.39751.32892.15592.15593.14823.14821.09482.1367
C52.63832.39751.48231.32893.14823.14822.15592.15592.13671.0948
H62.43081.10593.43592.15593.14821.77684.34083.96042.63214.1185
H72.43081.10593.43592.15593.14821.77683.96044.34082.63214.1185
H82.43083.43591.10593.14822.15594.34083.96041.77684.11852.6321
H92.43083.43591.10593.14822.15593.96044.34081.77684.11852.6321
H103.69162.23673.43111.09482.13672.63212.63214.11854.11852.5336
H113.69163.43112.23672.13671.09484.11854.11852.63212.63212.5336

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 105.736 S1 C2 H6 110.137
S1 C2 H7 110.137 S1 C3 C5 105.736
S1 C3 H8 110.137 S1 C3 H9 110.137
C2 S1 C3 94.651 C2 C4 C5 116.939
C2 C4 H10 119.681 C3 C5 C4 116.939
C3 C5 H11 119.681 C4 C2 H6 111.986
C4 C2 H7 111.986 C4 C5 H11 123.380
C5 C3 H8 111.986 C5 C3 H9 111.986
C5 C4 H10 123.380 H6 C2 H7 106.897
H8 C3 H9 106.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.166      
2 C -0.317      
3 C -0.317      
4 C -0.072      
5 C -0.072      
6 H 0.169      
7 H 0.169      
8 H 0.169      
9 H 0.169      
10 H 0.134      
11 H 0.134      


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 -1.907 1.907
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.006 0.000 0.000
y 0.000 -32.093 0.000
z 0.000 0.000 -38.678
Traceless
 xyz
x -3.620 0.000 0.000
y 0.000 6.749 0.000
z 0.000 0.000 -3.129
Polar
3z2-r2-6.257
x2-y2-6.913
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.867 0.000 0.000
y 0.000 10.358 0.000
z 0.000 0.000 9.139


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