On the oximine complexes of transition metals. Part 110: Spectroscopic and DSC study on some [Fe(Diox·H)2L2] and [Fe(Diox)3(BOR)2] type chelates and clathrochelates

L. Nagy, J. Zsakó, Cs Novák, Cs Várhelyi, Gy Vankó, G. Liptay

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Abstract

A number of 15 [Fe(Diox·H)2L2] type chelates and [Fe(Diox)3(BOR)2] clathrochelates (Diox·H2 - dimethylglyoxime, glyoxime, propoxime, nyoxime, furyl-dioxime; L-pyridine, alkylpyridine derivatives, diethyl-phenyl-phosphine, diethyl-p-tolyl-phosphine) were obtained and characterized by means of far and middle FTIR and Moessbauer spectroscopic methods. Some structural problems were discussed on the basis of the optical data. The DSC measurements show the higher thermal stability of the clathrochelates without O-H···O intramolecular hydrogen bonds (with asymmetric octahedral structure), as compared to the [Fe(Diox·H)2L2] trans, symmetric chelates containing O-H···O bonds. The kinetic parameters of the thermal decomposition of the complexes have been derived using the nomogram method.

Original languageEnglish
Pages (from-to)433-445
Number of pages13
JournalJournal of Thermal Analysis and Calorimetry
Volume57
Issue number2
Publication statusPublished - Jan 1 1999

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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