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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: QCISD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-156.893192
Energy at 298.15K 
HF Energy-156.151849
Nuclear repulsion energy124.462634
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 QCISD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVTZ
ABC
0.52081 0.21300 0.18710

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.350 0.408 0.000
C2 -0.888 1.269 0.000
H3 1.289 0.948 0.000
C4 0.350 -0.894 0.755
C5 0.350 -0.894 -0.755
H6 1.255 -1.198 1.262
H7 1.255 -1.198 -1.262
H8 -0.567 -1.177 1.256
H9 -0.567 -1.177 -1.256
H10 -1.785 0.645 0.000
H11 -0.926 1.909 0.884
H12 -0.926 1.909 -0.884

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50851.08311.50491.50492.23372.23372.21972.21972.14862.15982.1598
C21.50852.20042.60442.60443.50323.50322.76822.76821.09271.09221.0922
H31.08312.20042.20112.20112.48992.48993.08763.08763.08882.57112.5711
C41.50492.60442.20111.51081.08072.23201.08192.22812.73863.08233.4890
C51.50492.60442.20111.51082.23201.08072.22811.08192.73863.48903.0823
H62.23373.50322.48991.08072.23202.52431.82163.10763.77273.81464.3608
H72.23373.50322.48992.23201.08072.52433.10761.82163.77274.36083.8146
H82.21972.76823.08761.08192.22811.82163.10762.51132.52633.12853.7723
H92.21972.76823.08762.22811.08193.10761.82162.51132.52633.77233.1285
H102.14861.09273.08882.73862.73863.77273.77272.52632.52631.76541.7654
H112.15981.09222.57113.08233.48903.81464.36083.12853.77231.76541.7690
H122.15981.09222.57113.48903.08234.36083.81463.77233.12851.76541.7690

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.355 C1 C2 H11 111.287
C1 C2 H12 111.287 C1 C4 H5 59.869
C1 C4 H6 118.597 C1 C4 H8 117.273
C1 H5 C4 59.869 C1 H5 H7 118.597
C1 H5 H9 117.273 C2 C1 C3 115.232
C2 C1 C4 119.601 C2 C1 H5 119.601
C3 C1 C4 115.571 C3 C1 H5 115.571
C4 C1 H5 60.262 C4 H5 H7 117.963
C4 H5 H9 117.543 H5 C4 H6 117.963
H5 C4 H8 117.543 H6 C4 H8 114.772
H7 H5 H9 114.772 H10 C2 H11 107.804
H10 C2 H12 107.804 H11 C2 H12 108.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability