Chromatographic study of thermal reactions of cis- and trans-[Coen2 (OCOC6H4X)2]NO3 complexes in the solid phase

V. Carunchio, G. Grassini Strazza, A. Messina, C. M. Polcaro

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Thermal reactions of some cis- and trans-[Coen2(OCOC6H4X)2]NO3 complexes mixed with ammonium or sodium chloride, nitrate and sulphate are reported. Reflectance spectra have shown a cis to trans thermal isomerization and, in the presence of NH4Cl, the formation of trans-[Coen2Cl2]Y as final product. For the cis-isomers, the most interesting result is the chromatographic evidence of a stepwise reaction, resulting in the replacement of one carboxylato ligand by chloride and the formation of an intermediate species, characterized as trans-[Coen2(OCOC6H4X)Cl]Y. These intermediate species, are hardly detectable in the corresponding reactions of the trans-isomers. These results may mean that in the trans-carboxylato compounds the reaction rate of the second step is higher than that of the first, while the reverse can be supposed in the corresponding reaction of the cis-isomers.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalThermochimica Acta
Volume19
Issue number1
DOIs
Publication statusPublished - 1977

Fingerprint

Isomers
solid phases
isomers
Ammonium Chloride
Sodium chloride
Isomerization
Sodium Chloride
Nitrates
ammonium chlorides
Sulfates
Reaction rates
Chlorides
sodium chlorides
Ligands
isomerization
nitrates
sulfates
reaction kinetics
chlorides
reflectance

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Physical and Theoretical Chemistry

Cite this

Chromatographic study of thermal reactions of cis- and trans-[Coen2 (OCOC6H4X)2]NO3 complexes in the solid phase. / Carunchio, V.; Grassini Strazza, G.; Messina, A.; Polcaro, C. M.

In: Thermochimica Acta, Vol. 19, No. 1, 1977, p. 85-92.

Research output: Contribution to journalArticle

Carunchio, V. ; Grassini Strazza, G. ; Messina, A. ; Polcaro, C. M. / Chromatographic study of thermal reactions of cis- and trans-[Coen2 (OCOC6H4X)2]NO3 complexes in the solid phase. In: Thermochimica Acta. 1977 ; Vol. 19, No. 1. pp. 85-92.
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