Abstract
Calorimetric methods were used to study the enthalpy of solution of the alkaloids glaucine C21H25NO4 and lappaconitine C32H44N2O8 in 96% ethanol and their heat capacity in the temperature ranges 173–298.15 and 173–423 K. Equations describing the dependences ΔH msol ∼ f(\(\sqrt m \)) (m is molal concentration) and C 0p ∼ f(\(\sqrt T \)) for the compounds under study were derived. The enthalpies of combustion, melting, and formation of C21H25NO4 and C32H44N2O8 were estimated by means of theoretical calculations.
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Original Russian Text © Sh.B. Kasenova, Zh.K. Tukhmetova, A.Zh. Abil’daeva, E.V. Burdel’naya, G.K. Mukusheva, B.K. Kasenov, S.M. Adekenov, A.Zh. Turmukhambetov, 2007, published in Zhurnal Prikladnoi Khimii, 2007, Vol. 80, No. 4, pp. 562–565.
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Kasenova, S.B., Tukhmetova, Z.K., Abil’daeva, A.Z. et al. Thermodynamic properties of alkaloids lappaconitine and glaucine. Russ J Appl Chem 80, 549–552 (2007). https://doi.org/10.1134/S1070427207040052
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DOI: https://doi.org/10.1134/S1070427207040052