Fusion and solid-to-solid transitions of a homologous series of 11 alkane-a,x-dinitriles NC-(CH2)n-CN, where n = (1 to 10 and 12),were investigated by differential scanning calorimetry (d.s.c.). The temperatures of fusion increased as a function of the number of carbonatoms in the alkyl chains and showed a marked odd–even effect with even terms displaying higher values. Molar and massic enthalpiesand entropies of fusion also showed odd–even alternation. Solid-to-solid transitions were detected for all compounds, except dodecanedinitrile.Comparison was made with the literature values for temperatures, enthalpies, and entropies of fusion of linear alkanes andalkane-a,x-diamines.

Fusion and solid-to-solid transitions of a homologous series of alkane-aw-dinitriles

BLANCO, Ignazio;
2007-01-01

Abstract

Fusion and solid-to-solid transitions of a homologous series of 11 alkane-a,x-dinitriles NC-(CH2)n-CN, where n = (1 to 10 and 12),were investigated by differential scanning calorimetry (d.s.c.). The temperatures of fusion increased as a function of the number of carbonatoms in the alkyl chains and showed a marked odd–even effect with even terms displaying higher values. Molar and massic enthalpiesand entropies of fusion also showed odd–even alternation. Solid-to-solid transitions were detected for all compounds, except dodecanedinitrile.Comparison was made with the literature values for temperatures, enthalpies, and entropies of fusion of linear alkanes andalkane-a,x-diamines.
2007
Alkane-a,x-dinitriles; Differential scanning calorimetry; Fusion; Odd–even effect; solid to solid transition
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/3929
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