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

using model chemistry: QCISD(T)/aug-cc-pVTZ

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)/aug-cc-pVTZ
 hartrees
Energy at 0K-194.909365
Energy at 298.15K 
HF Energy-193.969700
Nuclear repulsion energy179.129452
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)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVTZ
ABC
0.24009 0.24009 0.20788

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.943
C2 0.000 1.241 0.000
C3 1.075 -0.620 0.000
C4 -1.075 -0.620 0.000
C5 0.000 0.000 -0.943
H6 0.000 0.000 2.033
H7 0.000 0.000 -2.033
H8 0.907 1.850 0.000
H9 -0.907 1.850 0.000
H10 1.149 -1.710 0.000
H11 2.056 -0.140 0.000
H12 -2.056 -0.140 0.000
H13 -1.149 -1.710 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55841.55841.55841.88591.08992.97572.26612.26612.26612.26612.26612.2661
C21.55842.14902.14901.55842.38152.38151.09261.09263.16702.47642.47643.1670
C31.55842.14902.14901.55842.38152.38152.47643.16701.09261.09263.16702.4764
C41.55842.14902.14901.55842.38152.38153.16702.47642.47643.16701.09261.0926
C51.88591.55841.55841.55842.97571.08992.26612.26612.26612.26612.26612.2661
H61.08992.38152.38152.38152.97574.06562.89452.89452.89452.89452.89452.8945
H72.97572.38152.38152.38151.08994.06562.89452.89452.89452.89452.89452.8945
H82.26611.09262.47643.16702.26612.89452.89451.81353.56902.29823.56904.1117
H92.26611.09263.16702.47642.26612.89452.89451.81354.11173.56902.29823.5690
H102.26613.16701.09262.47642.26612.89452.89453.56904.11171.81353.56902.2982
H112.26612.47641.09263.16702.26612.89452.89452.29823.56901.81354.11173.5690
H122.26612.47643.16701.09262.26612.89452.89453.56902.29823.56904.11171.8135
H132.26613.16702.47641.09262.26612.89452.89454.11173.56902.29823.56901.8135

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 74.468 C1 C2 H8 116.373
C1 C2 H9 116.373 C1 C3 C5 74.468
C1 C3 H10 116.373 C1 C3 H11 116.374
C1 C4 C5 74.468 C1 C4 H12 116.374
C1 C4 H13 116.373 C2 C1 C3 87.182
C2 C1 C4 87.182 C2 C1 H6 127.234
C2 C5 C3 87.182 C2 C5 C4 87.182
C2 C5 H7 127.234 C3 C1 C4 87.182
C3 C1 H6 127.234 C3 C5 C4 87.182
C3 C5 H7 127.234 C4 C1 H6 127.234
C4 C5 H7 127.234 C5 C2 H8 116.373
C5 C2 H9 116.373 C5 C3 H10 116.373
C5 C3 H11 116.374 C5 C4 H12 116.374
C5 C4 H13 116.373 H8 C2 H9 112.172
H10 C3 H11 112.172 H12 C4 H13 112.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability