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All results from a given calculation for C5H6S (Thiophene, 3-methyl-)

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 CS 1A'
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-41.167790
Energy at 298.15K-41.173656
HF Energy-40.714339
Nuclear repulsion energy104.836881
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' 3248 3138 5.22      
2 A' 3242 3133 4.75      
3 A' 3189 3082 7.51      
4 A' 3137 3031 33.12      
5 A' 3029 2927 51.94      
6 A' 1555 1503 1.61      
7 A' 1520 1469 9.50      
8 A' 1459 1410 0.73      
9 A' 1427 1379 14.59      
10 A' 1382 1335 3.06      
11 A' 1252 1210 8.19      
12 A' 1173 1134 2.77      
13 A' 1106 1068 5.12      
14 A' 1031 996 7.44      
15 A' 931 899 3.50      
16 A' 810 783 17.42      
17 A' 774 748 6.49      
18 A' 634 612 1.12      
19 A' 516 498 1.23      
20 A' 309 298 0.81      
21 A" 3123 3018 44.21      
22 A" 1503 1452 9.67      
23 A" 1080 1043 1.61      
24 A" 816 788 3.84      
25 A" 686 663 134.02      
26 A" 615 594 0.62      
27 A" 520 502 6.25      
28 A" 416 402 0.24      
29 A" 221 214 4.13      
30 A" 111 107 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 20406.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 19718.4 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
0.21438 0.07563 0.05652

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.272 0.838 0.000
C2 -1.302 0.323 0.000
C3 0.000 1.025 0.000
C4 1.097 0.126 0.000
H5 -1.973 -1.848 0.000
C6 -1.185 -1.087 0.000
S7 0.561 -1.619 0.000
H8 1.218 2.853 0.000
H9 -0.332 3.006 0.899
H10 -0.332 3.006 -0.899
C11 0.147 2.561 0.000
H12 2.167 0.357 0.000

Atom - Atom Distances (Å)
  H1 C2 C3 C4 H5 C6 S7 H8 H9 H10 C11 H12
H11.09822.27933.44262.70232.21103.75004.02913.04463.04462.96964.4646
C21.09821.47912.40642.27221.41512.69113.57022.99122.99122.66623.4689
C32.27931.47911.41833.48552.42212.70332.19582.20042.20041.54292.2678
C43.44262.40641.41833.64972.58381.82522.72933.33833.33832.61391.0950
H52.70232.27223.48553.64971.09562.54505.68115.20215.20214.89234.6907
C62.21101.41512.42212.58381.09561.82514.61454.27684.27683.88393.6495
S73.75002.69112.70331.82522.54501.82514.51944.79574.79574.20072.5460
H84.02913.57022.19582.72935.68114.61454.51941.79811.79811.10972.6702
H93.04462.99122.20043.33835.20214.27684.79571.79811.79721.11133.7513
H103.04462.99122.20043.33835.20214.27684.79571.79811.79721.11133.7513
C112.96962.66621.54292.61394.89233.88394.20071.10971.11131.11132.9900
H124.46463.46892.26781.09504.69073.64952.54602.67023.75133.75132.9900

picture of Thiophene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 123.676 H1 C2 C6 122.719
C2 C3 C4 112.292 C2 C3 C11 123.816
C2 C6 H5 129.205 C2 C6 S7 111.683
C3 C2 C6 113.606 C3 C4 S7 112.304
C3 C4 H12 128.473 C3 C11 H8 110.682
C3 C11 H9 110.949 C3 C11 H10 110.949
C4 C3 C11 123.892 C4 S7 C6 90.116
H5 C6 S7 119.112 S7 C4 H12 119.223
H8 C11 H9 108.111 H8 C11 H10 108.111
H9 C11 H10 107.921
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability