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I.B.3. (II.A.2.)

All data (experiment and calculated) in the CCCBDB for C4H8 (cyclobutane)

Other names
Cyclobutane; Tetramethylene; UN 2601;
INChI
InChI=1/C4H8/c1-2-4-3-1/h1-4H2

An "x" indicates that data is available. A number indicates how many calculations have been completed.
Property Experiment Calculated Comparison
Energies
Entropies
Enthalpy 298.15K enthalpy of formation x    
Enthalpy 0K enthalpy of formation x    
Energy 0K   240  
Energy 298.15K   231  
Atomization Enthalpy 298.15K x225x
Atomization Enthalpy 0K x224x
Entropy (298.15K) entropy x195x
Entropy at any temperature   195  
Integrated Heat Capacity integrated heat capacity  194 
Heat Capacity (Cp) Heat capacity x194x
Nuclear Repulsion Energy   195  
HOMO-LUMO Energies HOMO energies   187  
Barriers to Internal Rotation internal rotation  0 
Geometries Cartesians  159  
Internal Coordinates bond lengths bond angles x0x
Products of moments of inertia moments of inertia  175 
Rotational Constants rotational constants x179x
Point Group  187 
Vibrations Vibrational Frequencies vibrations x178x
Vibrational Intensities  175 
Zero-point energies x178x
Vibrational scaling factors x
Anharmonic frequencies and constants      
Electronic States Electronic states x 0  
Electrostatics Atom charges   157  
Dipole dipole  155 
Quadrupole quadrupole  150 
Polarizability polarizability  129 
Other results Spin   0  
Number of basis functions   27  
Diagnostics   5  
Conformations   1