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 C4H6 (1-Methylcyclopropene)

using model chemistry: MP2/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-155.638471
Energy at 298.15K 
HF Energy-154.932801
Nuclear repulsion energy108.460062
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/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at MP2/aug-cc-pVQZ
ABC
0.69242 0.21308 0.17378

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.180 0.000
C2 -0.050 -1.326 0.000
C3 1.153 -0.415 0.000
C4 -0.836 1.391 0.000
H5 -0.320 -1.848 0.912
H6 -0.320 -1.848 -0.912
H7 2.225 -0.373 0.000
H8 -0.226 2.291 0.000
H9 -1.482 1.401 -0.877
H10 -1.482 1.401 0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50631.29751.47152.24672.24672.29312.12332.11102.1110
C21.50631.50852.82801.08571.08572.46633.62103.20243.2024
C31.29751.50852.68652.24882.24881.07323.03743.31813.3181
C41.47152.82802.68653.40443.40443.53321.08701.08911.0891
H52.24671.08572.24883.40441.82463.08044.23963.88703.4509
H62.24671.08572.24883.40441.82463.08044.23963.45093.8870
H72.29312.46631.07323.53323.08043.08043.62074.20244.2024
H82.12333.62103.03741.08704.23964.23963.62071.77101.7710
H92.11103.20243.31811.08913.88703.45094.20241.77101.7537
H102.11103.20243.31811.08913.45093.88704.20241.77101.7537

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.982 H1 C2 C6 119.294
C2 C3 C6 24.899 C2 C3 C10 72.382
C2 C6 C3 35.802 C2 C6 H4 49.805
C2 C6 H5 32.826 C3 C2 C6 119.299
C3 C6 H4 51.985 C3 C6 H5 66.066
C3 C10 H7 9.339 C3 C10 H8 65.249
C3 C10 H9 74.677 H4 C6 H5 74.456
C6 C3 C10 86.318 H7 C10 H8 58.906
H7 C10 H9 77.957 H8 C10 H9 60.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability