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All results from a given calculation for C5H8 (Bicyclo[1.1.1]pentane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at QCISD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-195.099878
Energy at 298.15K 
HF Energy-193.981242
Nuclear repulsion energy180.065150
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/cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/cc-pVQZ
ABC
0.24269 0.24269 0.21003

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.937
C2 0.000 1.234 0.000
C3 1.069 -0.617 0.000
C4 -1.069 -0.617 0.000
C5 0.000 0.000 -0.937
H6 0.000 0.000 2.023
H7 0.000 0.000 -2.023
H8 0.903 1.842 0.000
H9 -0.903 1.842 0.000
H10 1.144 -1.703 0.000
H11 2.047 -0.139 0.000
H12 -2.047 -0.139 0.000
H13 -1.144 -1.703 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54951.54951.54951.87441.08602.96042.25542.25542.25542.25542.25542.2554
C21.54952.13722.13721.54952.36982.36981.08851.08853.15172.46472.46473.1517
C31.54952.13722.13721.54952.36982.36982.46473.15171.08851.08853.15172.4647
C41.54952.13722.13721.54952.36982.36983.15172.46472.46473.15171.08851.0885
C51.87441.54951.54951.54952.96041.08602.25542.25542.25542.25542.25542.2554
H61.08602.36982.36982.36982.96044.04642.88132.88132.88132.88132.88132.8813
H72.96042.36982.36982.36981.08604.04642.88132.88132.88132.88132.88132.8813
H82.25541.08852.46473.15172.25542.88132.88131.80543.55322.28803.55324.0934
H92.25541.08853.15172.46472.25542.88132.88131.80544.09343.55322.28803.5532
H102.25543.15171.08852.46472.25542.88132.88133.55324.09341.80543.55322.2880
H112.25542.46471.08853.15172.25542.88132.88132.28803.55321.80544.09343.5532
H122.25542.46473.15171.08852.25542.88132.88133.55322.28803.55324.09341.8054
H132.25543.15172.46471.08852.25542.88132.88134.09343.55322.28803.55321.8054

picture of Bicyclo[1.1.1]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 74.434 C1 C2 H8 116.422
C1 C2 H9 116.422 C1 C3 C5 74.434
C1 C3 H10 116.423 C1 C3 H11 116.422
C1 C4 C5 74.434 C1 C4 H12 116.422
C1 C4 H13 116.423 C2 C1 C3 87.207
C2 C1 C4 87.207 C2 C1 H6 127.217
C2 C5 C3 87.207 C2 C5 C4 87.207
C2 C5 H7 127.217 C3 C1 C4 87.207
C3 C1 H6 127.217 C3 C5 C4 87.207
C3 C5 H7 127.217 C4 C1 H6 127.217
C4 C5 H7 127.217 C5 C2 H8 116.422
C5 C2 H9 116.422 C5 C3 H10 116.423
C5 C3 H11 116.422 C5 C4 H12 116.422
C5 C4 H13 116.423 H8 C2 H9 112.057
H10 C3 H11 112.057 H12 C4 H13 112.057
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability