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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-35.957998
Energy at 298.15K-35.964916
HF Energy-35.352144
Nuclear repulsion energy86.194537
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 3259 3094 11.06      
2 A 3224 3061 0.61      
3 A 3201 3039 19.33      
4 A 3159 2999 23.32      
5 A 3114 2957 30.70      
6 A 3078 2923 39.42      
7 A 1619 1537 11.87      
8 A 1518 1441 0.79      
9 A 1498 1422 2.92      
10 A 1363 1294 1.18      
11 A 1347 1279 5.24      
12 A 1290 1225 17.51      
13 A 1224 1162 1.85      
14 A 1165 1106 0.48      
15 A 1114 1058 1.58      
16 A 1043 990 5.96      
17 A 1022 970 3.77      
18 A 943 895 3.58      
19 A 894 849 0.42      
20 A 879 834 1.96      
21 A 811 770 27.59      
22 A 709 673 7.26      
23 A 695 659 58.14      
24 A 654 621 23.77      
25 A 496 471 0.61      
26 A 401 380 3.11      
27 A 199 189 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 19957.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 18947.9 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/CEP-31G*
ABC
0.22519 0.15278 0.09674

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 -0.071 -1.255 0.248
H2 -0.087 -1.445 1.335
H3 0.140 -2.192 -0.293
C4 -1.390 -0.582 -0.207
H5 -2.249 -1.008 0.343
H6 -1.557 -0.743 -1.291
C7 0.120 1.290 0.089
H8 0.496 2.313 0.193
C9 -1.197 0.908 0.068
H10 -2.027 1.618 0.147
S11 1.282 -0.044 -0.101

Atom - Atom Distances (Å)
  C1 H2 H3 C4 H5 H6 C7 H8 C9 H10 S11
C11.10401.10281.54992.19442.19992.55753.61292.44503.47701.8488
H21.10401.80612.19662.41893.09073.01353.97102.89383.81562.4293
H31.10281.80612.22342.74172.44443.50384.54523.39554.40532.4403
C41.54992.19662.22341.10501.10822.42403.47841.52742.31732.7282
H52.19442.41892.74171.10501.79443.31024.31062.20232.64223.6870
H62.19993.09072.44441.10821.79442.97513.96912.16872.80423.1563
C72.55753.01353.50382.42403.31022.97511.09421.37162.17201.7800
H83.61293.97104.54523.47844.31063.96911.09422.20362.61682.5020
C92.44502.89383.39551.52742.20232.16871.37162.20361.09482.6610
H103.47703.81564.40532.31732.64222.80422.17202.61681.09483.7110
S111.84882.42932.44032.72823.68703.15631.78002.50202.66103.7110

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 110.368 C1 C4 H6 110.607
C1 C4 C9 105.218 C1 S11 C7 89.605
H2 C1 H3 109.856 H2 C1 C4 110.597
H2 C1 S11 108.052 H3 C1 C4 112.805
H3 C1 S11 108.903 C4 C1 S11 106.453
C4 C9 C7 113.363 C4 C9 H10 123.346
H5 C4 H6 108.344 H5 C4 C9 112.583
H6 C4 C9 109.717 C7 C9 H10 123.046
H8 C7 C9 126.309 H8 C7 S11 119.101
C9 C7 S11 114.583
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability