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All results from a given calculation for C4H8 (cyclobutane)

using model chemistry: MP4=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP4=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-156.786919
Energy at 298.15K 
HF Energy-156.111389
Nuclear repulsion energy126.094191
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 MP4=FULL/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/aug-cc-pVDZ
ABC
0.35138 0.35138 0.21019

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVDZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.085 0.147
C2 0.000 -1.085 0.147
C3 -1.085 0.000 -0.147
C4 1.085 0.000 -0.147
H5 0.000 1.359 1.217
H6 0.000 2.005 -0.461
H7 0.000 -1.359 1.217
H8 0.000 -2.005 -0.461
H9 -1.359 0.000 -1.217
H10 -2.005 0.000 0.461
H11 1.359 0.000 -1.217
H12 2.005 0.000 0.461

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C12.17091.56321.56321.10411.10252.66833.14952.21082.30112.21082.3011
C22.17091.56321.56322.66833.14951.10411.10252.21082.30112.21082.3011
C31.56321.56322.17092.21082.30112.21082.30111.10411.10252.66833.1495
C41.56321.56322.17092.21082.30112.21082.30112.66833.14951.10411.1025
H51.10412.66832.21082.21081.79842.71803.75913.10162.53703.10162.5370
H61.10253.14952.30112.30111.79843.75914.00922.53702.98132.53702.9813
H72.66831.10412.21082.21082.71803.75911.79843.10162.53703.10162.5370
H83.14951.10252.30112.30113.75914.00921.79842.53702.98132.53702.9813
H92.21082.21081.10412.66833.10162.53703.10162.53701.79842.71803.7591
H102.30112.30111.10253.14952.53702.98132.53702.98131.79843.75914.0092
H112.21082.21082.66831.10413.10162.53703.10162.53702.71803.75911.7984
H122.30112.30113.14951.10252.53702.98132.53702.98133.75914.00921.7984

picture of cyclobutane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 87.959 C1 C3 H9 110.784
C1 C3 H10 118.340 C1 C4 C2 87.959
C1 C4 H11 110.784 C1 C4 H12 118.340
C2 C3 H9 110.784 C2 C3 H10 118.340
C2 C4 H11 110.784 C2 C4 H12 118.340
C3 C1 C4 87.959 C3 C1 H5 110.784
C3 C1 H6 118.340 C3 C2 C4 87.959
C3 C2 H7 110.784 C3 C2 H8 118.340
C4 C1 H5 110.784 C4 C1 H6 118.340
C4 C2 H7 110.784 C4 C2 H8 118.340
H5 C1 H6 109.177 H7 C2 H8 109.177
H9 C3 H10 109.177 H11 C4 H12 109.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability