return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H6S (Thiophene, 2-methyl-)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-591.157429
Energy at 298.15K 
HF Energy-590.343296
Nuclear repulsion energy272.659445
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 MP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
ABC
0.17542 0.10387 0.06604

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.394 -1.553 0.000
C2 -1.444 -1.035 0.000
H3 -2.151 1.070 0.000
C4 -1.310 0.388 0.000
C5 0.000 0.808 0.000
H6 -0.026 -2.730 0.000
C7 -0.226 -1.669 0.000
S8 1.087 -0.547 0.000
H9 -0.320 2.906 0.000
H10 1.129 2.417 0.883
H11 1.129 2.417 -0.883
C12 0.521 2.213 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 C5 H6 C7 S8 H9 H10 H11 C12
H11.08162.63442.22243.36182.64372.17063.62304.91705.37975.37974.7620
C21.08162.22081.42902.34112.20961.37322.57764.09774.39444.39443.7961
H32.63442.22081.08262.16684.35383.34823.61942.59223.65323.65322.9058
C42.22241.42901.08261.37613.37182.32542.57342.70563.29313.29312.5856
C53.36182.34112.16681.37613.53782.48741.73722.12212.15432.15431.4987
H62.64372.20964.35383.37183.53781.07932.45035.64325.34805.34804.9733
C72.17061.37323.34822.32542.48741.07931.72734.57594.39434.39433.9536
S83.62302.57763.61942.57341.73722.45031.72733.72863.09293.09292.8178
H94.91704.09772.59222.70562.12215.64324.57593.72861.76541.76541.0894
H105.37974.39443.65323.29312.15435.34804.39433.09291.76541.76531.0908
H115.37974.39443.65323.29312.15435.34804.39433.09291.76541.76531.0908
C124.76203.79612.90582.58561.49874.97333.95362.81781.08941.09081.0908

picture of Thiophene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 123.967 H1 C2 C7 123.882
C2 C4 H3 123.724 C2 C4 C5 113.133
C2 C7 H6 128.177 C2 C7 S8 111.974
H3 C4 C5 123.143 C4 C2 C7 112.151
C4 C5 S8 110.966 C4 C5 C12 128.108
C5 S8 C7 91.776 C5 C12 H9 109.134
C5 C12 H10 111.630 C5 C12 H11 111.630
H6 C7 S8 119.850 S8 C5 C12 120.926
H9 C12 H10 108.145 H9 C12 H11 108.145
H10 C12 H11 108.035
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability