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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-553.087495
Energy at 298.15K-553.094262
HF Energy-552.454682
Nuclear repulsion energy215.866163
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 MP2/6-31G*
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 3256 3070 12.75      
2 A1 3114 2937 0.22      
3 A1 1721 1623 4.60      
4 A1 1556 1467 6.28      
5 A1 1347 1270 0.07      
6 A1 1173 1107 0.32      
7 A1 991 935 0.09      
8 A1 752 709 2.17      
9 A1 529 499 0.14      
10 A2 3163 2983 0.00      
11 A2 1187 1119 0.00      
12 A2 1013 955 0.00      
13 A2 939 886 0.00      
14 A2 365 344 0.00      
15 B1 3165 2984 15.90      
16 B1 1171 1104 10.68      
17 B1 955 900 0.11      
18 B1 691 651 46.54      
19 B1 66 62 4.82      
20 B2 3233 3049 1.81      
21 B2 3115 2938 49.10      
22 B2 1552 1463 0.10      
23 B2 1396 1317 3.18      
24 B2 1309 1235 7.54      
25 B2 1013 955 5.31      
26 B2 842 794 0.63      
27 B2 671 633 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 20141.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 18993.6 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 MP2/6-31G*
ABC
0.22107 0.15951 0.09599

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.245
C2 0.000 1.347 0.004
C3 0.000 -1.347 0.004
C4 0.000 0.669 -1.335
C5 0.000 -0.669 -1.335
H6 -0.886 1.977 0.134
H7 0.886 1.977 0.134
H8 0.886 -1.977 0.134
H9 -0.886 -1.977 0.134
H10 0.000 1.271 -2.241
H11 0.000 -1.271 -2.241

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.83151.83152.66552.66552.43502.43502.43502.43503.71073.7107
C21.83152.69481.50172.42061.09501.09503.44323.44322.24703.4494
C31.83152.69482.42061.50173.44323.44321.09501.09503.44942.2470
C42.66551.50172.42061.33752.15792.15793.15373.15371.08792.1408
C52.66552.42061.50171.33753.15373.15372.15792.15792.14081.0879
H62.43501.09503.44322.15793.15371.77254.33363.95452.63194.1205
H72.43501.09503.44322.15793.15371.77253.95454.33362.63194.1205
H82.43503.44321.09503.15372.15794.33363.95451.77254.12052.6319
H92.43503.44321.09503.15372.15793.95454.33361.77254.12052.6319
H103.71072.24703.44941.08792.14082.63192.63194.12054.12052.5417
H113.71073.44942.24702.14081.08794.12054.12052.63192.63192.5417

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 105.772 S1 C2 H6 110.055
S1 C2 H7 110.055 S1 C3 C5 105.772
S1 C3 H8 110.055 S1 C3 H9 110.055
C2 S1 C3 94.725 C2 C4 C5 116.865
C2 C4 H10 119.531 C3 C5 C4 116.865
C3 C5 H11 119.531 C4 C2 H6 111.446
C4 C2 H7 111.446 C4 C5 H11 123.603
C5 C3 H8 111.446 C5 C3 H9 111.446
C5 C4 H10 123.603 H6 C2 H7 108.068
H8 C3 H9 108.068
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability