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

All data (experiment and calculated) in the CCCBDB for CHCCH2CH3 (1-Butyne)

Other names
1-Butyne; Butyne-1; Ethyl acetylene, inhibited; Ethylacetylene; Ethylethyne; UN 2452; butyne; but-1-yne;
INChI
InChI=1/C4H6/c1-3-4-2/h1H,4H2,2H3

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   235  
Energy 298.15K   225  
Atomization Enthalpy 298.15K x218x
Atomization Enthalpy 0K x218x
Entropy (298.15K) entropy x192x
Entropy at any temperature   192  
Integrated Heat Capacity integrated heat capacity x192x
Heat Capacity (Cp) Heat capacity x192x
Nuclear Repulsion Energy   195  
HOMO-LUMO Energies HOMO energies   189  
Barriers to Internal Rotation internal rotation x9x
Geometries Cartesians  166  
Internal Coordinates bond lengths bond angles x166x
Products of moments of inertia moments of inertia x183x
Rotational Constants rotational constants x187x
Point Group  187 
Vibrations Vibrational Frequencies vibrations x186x
Vibrational Intensities  185 
Zero-point energies  186 
Vibrational scaling factors  
Anharmonic frequencies and constants   3  
Electronic States Electronic states x 0  
Electrostatics Atom charges   157  
Dipole dipole x155x
Quadrupole quadrupole  151 
Polarizability polarizability  134 
Other results Spin   0  
Number of basis functions   27  
Diagnostics   5  
Conformations   1