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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

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(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-156.785629
Energy at 298.15K 
HF Energy-156.110404
Nuclear repulsion energy123.142415
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(T)=FULL/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/aug-cc-pVDZ
ABC
0.50814 0.20919 0.18365

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.354 0.414 0.000
C2 -0.898 1.277 0.000
H3 1.303 0.965 0.000
C4 0.354 -0.901 0.765
C5 0.354 -0.901 -0.765
H6 1.271 -1.209 1.275
H7 1.271 -1.209 -1.275
H8 -0.574 -1.188 1.272
H9 -0.574 -1.188 -1.272
H10 -1.802 0.641 0.000
H11 -0.939 1.925 0.895
H12 -0.939 1.925 -0.895

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.52061.09681.52171.52172.25942.25942.24602.24602.16812.18012.1801
C21.52062.22302.62652.62653.53803.53802.79262.79261.10581.10551.1055
H31.09682.22302.22842.22842.52062.52063.12593.12593.12192.59762.5976
C41.52172.62652.22841.52971.09422.25801.09542.25622.75903.11003.5230
C51.52172.62652.22841.52972.25801.09422.25621.09542.75903.52303.1100
H62.25943.53802.52061.09422.25802.55031.84553.14513.80763.85374.4065
H72.25943.53802.52062.25801.09422.55033.14511.84553.80764.40653.8537
H82.24602.79263.12591.09542.25621.84553.14512.54322.54353.15603.8098
H92.24602.79263.12592.25621.09543.14511.84552.54322.54353.80983.1560
H102.16811.10583.12192.75902.75903.80763.80762.54352.54351.78761.7876
H112.18011.10552.59763.11003.52303.85374.40653.15603.80981.78761.7907
H122.18011.10552.59763.52303.11004.40653.85373.80983.15601.78761.7907

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.280 C1 C2 H11 111.247
C1 C2 H12 111.247 C1 C4 H5 59.827
C1 C4 H6 118.561 C1 C4 H8 117.300
C1 H5 C4 59.827 C1 H5 H7 118.561
C1 H5 H9 117.300 C2 C1 C3 115.323
C2 C1 C4 119.382 C2 C1 H5 119.382
C3 C1 C4 115.693 C3 C1 H5 115.693
C4 C1 H5 60.347 C4 H5 H7 117.799
C4 H5 H9 117.556 H5 C4 H6 117.799
H5 C4 H8 117.556 H6 C4 H8 114.884
H7 H5 H9 114.884 H10 C2 H11 107.879
H10 C2 H12 107.879 H11 C2 H12 108.175
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability