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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: CCSD(T)/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 CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-156.912708
Energy at 298.15K 
HF Energy-156.150764
Nuclear repulsion energy124.283380
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 CCSD(T)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVTZ
ABC
0.51858 0.21256 0.18668

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.351 0.410 0.000
C2 -0.891 1.269 0.000
H3 1.290 0.952 0.000
C4 0.351 -0.894 0.757
C5 0.351 -0.894 -0.757
H6 1.258 -1.199 1.263
H7 1.258 -1.199 -1.263
H8 -0.567 -1.177 1.258
H9 -0.567 -1.177 -1.258
H10 -1.785 0.639 0.000
H11 -0.933 1.908 0.885
H12 -0.933 1.908 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51011.08401.50841.50842.23732.23732.22322.22322.14832.16262.1626
C21.51012.20392.60692.60693.50733.50732.76912.76911.09361.09301.0930
H31.08402.20392.20552.20552.49452.49453.09213.09213.09082.57652.5765
C41.50842.60692.20551.51471.08162.23531.08292.23232.73643.08553.4932
C51.50842.60692.20551.51472.23531.08162.23231.08292.73643.49323.0855
H62.23733.50732.49451.08162.23532.52621.82433.11183.77223.82034.3666
H72.23733.50732.49452.23531.08162.52623.11181.82433.77224.36663.8203
H82.22322.76913.09211.08292.23231.82433.11182.51562.52253.12903.7742
H92.22322.76913.09212.23231.08293.11181.82432.51562.52253.77423.1290
H102.14831.09363.09082.73642.73643.77223.77222.52252.52251.76681.7668
H112.16261.09302.57653.08553.49323.82034.36663.12903.77421.76681.7706
H122.16261.09302.57653.49323.08554.36663.82033.77423.12901.76681.7706

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.174 C1 C2 H11 111.355
C1 C2 H12 111.355 C1 C4 H5 59.861
C1 C4 H6 118.566 C1 C4 H8 117.227
C1 H5 C4 59.861 C1 H5 H7 118.566
C1 H5 H9 117.227 C2 C1 C3 115.345
C2 C1 C4 119.459 C2 C1 H5 119.459
C3 C1 C4 115.618 C3 C1 H5 115.618
C4 C1 H5 60.278 C4 H5 H7 117.878
C4 H5 H9 117.524 H5 C4 H6 117.878
H5 C4 H8 117.524 H6 C4 H8 114.885
H7 H5 H9 114.885 H10 C2 H11 107.811
H10 C2 H12 107.811 H11 C2 H12 108.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability