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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-550.228453
Energy at 298.15K-550.235253
HF Energy-549.749161
Nuclear repulsion energy213.823522
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 MP2/3-21G*
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 3238 3081 10.14      
2 A1 3102 2951 0.36      
3 A1 1674 1593 1.32      
4 A1 1582 1505 8.69      
5 A1 1329 1264 0.33      
6 A1 1205 1147 0.58      
7 A1 930 885 0.16      
8 A1 715 680 3.14      
9 A1 534 508 0.06      
10 A2 3147 2994 0.00      
11 A2 1215 1156 0.00      
12 A2 1016 967 0.00      
13 A2 965 918 0.00      
14 A2 376 357 0.00      
15 B1 3149 2996 15.49      
16 B1 1201 1142 8.57      
17 B1 958 911 0.17      
18 B1 706 672 57.53      
19 B1 84 80 4.65      
20 B2 3210 3054 1.66      
21 B2 3103 2952 36.50      
22 B2 1585 1507 0.00      
23 B2 1409 1341 6.08      
24 B2 1303 1239 3.72      
25 B2 957 910 6.37      
26 B2 843 802 0.57      
27 B2 639 608 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 20087.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 19108.9 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 MP2/3-21G*
ABC
0.21726 0.15583 0.09399

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.260
C2 0.000 1.361 0.005
C3 0.000 -1.361 0.005
C4 0.000 0.670 -1.354
C5 0.000 -0.670 -1.354
H6 -0.892 1.983 0.136
H7 0.892 1.983 0.136
H8 0.892 -1.983 0.136
H9 -0.892 -1.983 0.136
H10 0.000 1.274 -2.257
H11 0.000 -1.274 -2.257

Atom - Atom Distances (Å)
  S1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
S11.85191.85192.69932.69932.44742.44742.44742.44743.74053.7405
C21.85192.72301.52502.44461.09451.09453.46343.46342.26323.4728
C31.85192.72302.44461.52503.46343.46341.09451.09453.47282.2632
C42.69931.52502.44461.34062.17692.17693.17093.17091.08552.1434
C52.69932.44461.52501.34063.17093.17092.17692.17692.14341.0855
H62.44741.09453.46342.17693.17091.78324.34783.96532.64984.1383
H72.44741.09453.46342.17693.17091.78323.96534.34782.64984.1383
H82.44743.46341.09453.17092.17694.34783.96531.78324.13832.6498
H92.44743.46341.09453.17092.17693.96534.34781.78324.13832.6498
H103.74052.26323.47281.08552.14342.64982.64984.13834.13832.5481
H113.74053.47282.26322.14341.08554.13834.13832.64982.64982.5481

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 105.725 S1 C2 H6 109.636
S1 C2 H7 109.636 S1 C3 C5 105.725
S1 C3 H8 109.636 S1 C3 H9 109.636
C2 S1 C3 94.646 C2 C4 C5 116.952
C2 C4 H10 119.256 C3 C5 C4 116.952
C3 C5 H11 119.256 C4 C2 H6 111.343
C4 C2 H7 111.343 C4 C5 H11 123.792
C5 C3 H8 111.343 C5 C3 H9 111.343
C5 C4 H10 123.792 H6 C2 H7 109.100
H8 C3 H9 109.100
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability