| Abstract
| - The enthalpies of combustion and vaporization of 3-buten-1-ol and 3-butyn-1-ol have been measured bystatic bomb combustion calorimetry and correlation gas chromatography techniques, respectively, and thegas-phase enthalpies of formation, ΔfH°m(g), have been determined, the values being −147.3 ± 1.8 and 16.7± 1.6 kJ mol-1, for 3-buten-1-ol and 3-butyn-1-ol, respectively. High level calculations at the G2 and G3levels have also been carried out. Relationships between the enthalpies of formation of 1-alkanols, 1-alkenolsand 1-alkynols and with the corresponding hydrocarbons have been discussed. From the calculated contributionsto ΔfH°m(g) for the substitutions of CH3 by CH2OH, CH3CH2 by CH2CH and CH3CH2 by CH⋮C, we haveestimated the ΔfH°m(g) values for 3-buten-1-ol and 3-butyn-1-ol, in excellent agreement with the experimentalones. ΔfH°m(g) values for 1-alkenols and 1-alkynols up to 10 carbon atoms have also been estimated.
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