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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-550.195230
Energy at 298.15K-550.202164
Nuclear repulsion energy214.798187
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 CID/3-21G*
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 3292 3064 11.54      
2 A1 3151 2932 0.41      
3 A1 1772 1649 2.17      
4 A1 1606 1494 7.86      
5 A1 1369 1274 0.79      
6 A1 1233 1147 0.83      
7 A1 954 888 0.18      
8 A1 739 688 3.20      
9 A1 551 512 0.12      
10 A2 3190 2968 0.00      
11 A2 1249 1163 0.00      
12 A2 1050 977 0.00      
13 A2 1005 935 0.00      
14 A2 394 367 0.00      
15 B1 3192 2970 16.71      
16 B1 1232 1147 9.22      
17 B1 975 908 1.04      
18 B1 734 683 59.47      
19 B1 95 89 4.39      
20 B2 3263 3036 1.72      
21 B2 3150 2931 42.57      
22 B2 1605 1493 0.14      
23 B2 1444 1344 5.54      
24 B2 1343 1250 3.68      
25 B2 983 915 7.27      
26 B2 867 807 0.48      
27 B2 664 618 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 20550.9 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 19122.6 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 CID/3-21G*
ABC
0.21982 0.15687 0.09481

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.256
C2 0.000 1.354 0.005
C3 0.000 -1.354 0.005
C4 0.000 0.663 -1.350
C5 0.000 -0.663 -1.350
H6 -0.887 1.975 0.133
H7 0.887 1.975 0.133
H8 0.887 -1.975 0.133
H9 -0.887 -1.975 0.133
H10 0.000 1.266 -2.248
H11 0.000 -1.266 -2.248

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.84361.84362.68952.68952.43892.43892.43892.43893.72563.7256
C21.84362.70831.52142.43041.09021.09023.44753.44752.25473.4553
C31.84362.70832.43041.52143.44753.44751.09021.09023.45532.2547
C42.68951.52142.43041.32642.16972.16973.15383.15381.08092.1274
C52.68952.43041.52141.32643.15383.15382.16972.16972.12741.0809
H62.43891.09023.44752.16973.15381.77434.32983.94962.63794.1177
H72.43891.09023.44752.16973.15381.77433.94964.32982.63794.1177
H82.43893.44751.09023.15382.16974.32983.94961.77434.11772.6379
H92.43893.44751.09023.15382.16973.94964.32981.77434.11772.6379
H103.72562.25473.45531.08092.12742.63792.63794.11774.11772.5312
H113.72563.45532.25472.12741.08094.11774.11772.63792.63792.5312

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 105.723 S1 C2 H6 109.789
S1 C2 H7 109.789 S1 C3 C5 105.723
S1 C3 H8 109.789 S1 C3 H9 109.789
C2 S1 C3 94.533 C2 C4 C5 117.010
C2 C4 H10 119.121 C3 C5 C4 117.010
C3 C5 H11 119.121 C4 C2 H6 111.288
C4 C2 H7 111.288 C4 C5 H11 123.869
C5 C3 H8 111.288 C5 C3 H9 111.288
C5 C4 H10 123.869 H6 C2 H7 108.923
H8 C3 H9 108.923
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability