Four solid-crystal forms of paraazoxyanisole and the thermodynamic relationships between them

It is shown that paraazoxyanisole has four solid-crystal forms. The heats and temperatures of melting and transition are related by the following five equations: Qm(IV) = Qm(II); Qm(IV) = Qm(I) + Qm(III); Tm(IV) = Tm(III); Ttr(II-III) = Tm(I); and Qtr(II-III) = Qm(I), Qm(SCIV) = 52.0 ± 0.3 kJ/mol. Earlier, similar relationships were established for the third homologue of paraazoxyanisole, Qm[SCIV(C3)] = 48.2 kJ/mol. It is found that for paraazoxyphenetole, Qm[SCIV(C2)] = 46.0 kJ/mol. © 2002 MAIK "Nauka/Interperiodica".

Authors
Editors
-
Publisher
-
Number of issue
6
Language
English
Pages
966-969
Status
Published
Department
-
Number
-
Volume
47
Year
2002
Organizations
  • 1 Russ. Univ. of Peoples' Friendship, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Keywords
azoxy derivative; paraazoxyanisole; unclassified drug; article; calculation; crystal structure; melting point; phase transition; temperature; thermodynamics
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/161/