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  • 1
    Electronic Resource
    Electronic Resource
    Standard molar enthalpies of solvation of aliphatic esters in 1,2-dichloroethane andn-hexane (1993)
    Springer
    Journal of solution chemistry 22 (1993), S. 707-713 
    Details
    ISSN: 1572-8927
    Keywords: Enthalpy of solution ; enthalpy of solvation ; aliphatic esters ; nonaqueous solution ; 1,2-dichloroethane ; n-hexane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The molar enthalpies of solution at infinite dilution of methyl-, ethyl-, n-butyl-and n-pentylacetate, and ethylpropionate, ethylbutanoate and ethylhexanoate were obtained by means of calorimetric determinations in 1,2-dichloroethane and n-hexane. From these values and the standard molar enthalpy of vaporization, the standard molar enthalpy of solvation of these esters in both solvents were calculated. These calculated values are shown to correlate with the number of methylene groups in the esters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647410
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  • 2
    Electronic Resource
    Electronic Resource
    The mean enthalpy of the lanthanide-oxygen bond in 2,2,6,6-tetramethyl-3,5-heptanedione chelates of praseodimium and holmium (1993)
    Springer
    Structural chemistry 4 (1993), S. 323-325 
    Details
    ISSN: 1572-9001
    Keywords: Thermochemistry ; 2,2,6,6-tetramethyl-3,5-heptanedione ; mean enthalpy ; β-diketonates ; lanthanide elements ; lanthanide-oxygen bond
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The general thermochemical reaction LnCl3·6H2O(c)+3Hthd(1)+73.92H2O(1) = Ln(thd)3(c) +3HCl·26.64H2O(aq); ΔrHm (Ln = Pr, Ho and thd = 2,2,6,6-tetramethyl-3,5-heptanedionate) was employed to determine through solution-reaction calorimetry at 298.15 K the standard molar enthalpies of formation of crystalline chelates, −2434.3±11.5 (Pr) and −2384.8±11.5 (Ho) kJ mol−1. These values and the corresponding molar enthalpies of sublimation enabled the determination of the standard molar enthalpies of chelates in the gaseous phase. From these values the mean enthalpies of the lanthanide-oxygen bond, 265±10 (Pr) and 253±10 (Ho) kJ mol−1 were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681206
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