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All results from a given calculation for C4H6S (Thiophene, 2,3-dihydro-)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-35.615161
Energy at 298.15K-35.621891
HF Energy-35.245439
Nuclear repulsion energy84.090545
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/CEP-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 A 3233 3124 22.26      
2 A 3178 3071 7.75      
3 A 3177 3070 28.82      
4 A 3110 3005 42.64      
5 A 3083 2979 39.56      
6 A 3034 2932 53.46      
7 A 1576 1523 8.78      
8 A 1513 1462 1.35      
9 A 1490 1440 1.91      
10 A 1356 1310 4.24      
11 A 1339 1294 4.45      
12 A 1293 1250 20.27      
13 A 1215 1174 0.99      
14 A 1152 1113 0.57      
15 A 1121 1083 0.44      
16 A 1045 1010 5.77      
17 A 1009 975 4.70      
18 A 910 879 4.44      
19 A 876 847 1.07      
20 A 858 829 0.68      
21 A 762 737 20.24      
22 A 678 655 56.59      
23 A 658 635 37.30      
24 A 615 594 3.32      
25 A 481 465 0.61      
26 A 385 372 1.82      
27 A 146 141 1.01      

Unscaled Zero Point Vibrational Energy (zpe) 19646.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 18984.2 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/CEP-31G
ABC
0.21342 0.14289 0.09002

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.098 -1.313 0.207
H2 -0.082 -1.590 1.281
H3 0.092 -2.201 -0.427
C4 -1.447 -0.581 -0.174
H5 -2.278 -0.969 0.454
H6 -1.702 -0.768 -1.243
C7 0.110 1.337 0.077
H8 0.496 2.361 0.176
C9 -1.220 0.939 0.054
H10 -2.058 1.650 0.127
S11 1.341 -0.049 -0.084

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 C9 H10 S11
C11.10861.10751.58142.22122.23032.66193.72222.52113.55341.9376
H21.10861.82162.23562.42793.10973.17144.14353.03323.96672.5029
H31.10751.82162.24842.81262.43713.57424.61983.43704.44482.5121
C41.58142.23562.24841.11191.11452.48353.54321.55402.33262.8396
H52.22122.42792.81261.11191.80293.34194.34362.21882.64883.7733
H62.23033.10972.43711.11451.80293.07524.07872.19692.80093.3347
C72.66193.17143.57422.48353.34193.07521.09861.38862.19061.8608
H83.72224.14354.61983.54324.34364.07871.09862.23192.65122.5672
C92.52113.03323.43701.55402.21882.19691.38862.23191.10092.7484
H103.55343.96674.44482.33262.64882.80092.19062.65121.10093.8053
S111.93762.50292.51212.83963.77333.33471.86082.56722.74843.8053

picture of Thiophene, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H5 109.894 C1 C4 H6 110.446
C1 C4 C9 107.042 C1 S11 C7 88.956
H2 C1 H3 110.567 H2 C1 C4 111.198
H2 C1 S11 107.348 H3 C1 C4 112.283
H3 C1 S11 108.047 C4 C1 S11 107.162
C4 C9 C7 115.014 C4 C9 H10 122.020
H5 C4 H6 108.145 H5 C4 C9 111.598
H6 C4 C9 109.728 C7 C9 H10 122.860
H8 C7 C9 127.238 H8 C7 S11 118.017
C9 C7 S11 114.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability