Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Thermal investigation of some mixed-ligand copper(II) chelates containing 1,2-diamines and beta-ketoenols
Autore:
Lalia-Kantouri, M; Tzavellas, LC;
Indirizzi:
Aristotelian Univ Salonika, Dept Chem, Inorgan Chem Lab, GR-54006 Salonika, Greece Aristotelian Univ Salonika Salonika Greece GR-54006 006 Salonika, Greece
Titolo Testata:
THERMOCHIMICA ACTA
fascicolo: 1-2, volume: 371, anno: 2001,
pagine: 65 - 73
SICI:
0040-6031(20010426)371:1-2<65:TIOSMC>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICKEL(II);
Keywords:
copper(II) chelates; beta-ketoenols; N,N '-substituted ethylenediamines; TG/DTG; TG/DTA; mass spectra;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Lalia-Kantouri, M Aristotelian Univ Salonika, Dept Chem, Inorgan Chem Lab,POB 135, GR-54006Salonika, Greece Aristotelian Univ Salonika POB 135 Salonika Greece GR-54006
Citazione:
M. Lalia-Kantouri e L.C. Tzavellas, "Thermal investigation of some mixed-ligand copper(II) chelates containing 1,2-diamines and beta-ketoenols", THERMOC ACT, 371(1-2), 2001, pp. 65-73

Abstract

Thermal studies by TG/DTA and/or TG/DTG techniques of some mixed-ligand copper(II) chelates were carried out to determine their stabilities and modesof decomposition. The chelates have the formula [Cu(beta -dione)(enR)]X, where beta -dione is the anion of a beta -ketoenol, enR is N,N'-substituted aryl or alkyl ethylenediamine and X is NO3- or ClO4-, while the geometry ofthe ensuing chromophore CuN2O2 is square-planar. The degradation processesdepend on the anions and the substituents of the ligands. The nitrate compounds are decomposed until the stable oxide, CuO, is formed at similar to 560 degreesC in both air and nitrogen. The perchlorate compounds, however, are strong explosives in air and vigorously loose almost all their weight inone step. Ln nitrogen, the thermal profile changes dramatically and instead of explosion a decomposition process takes place affording a metallic residue at similar to 800 degreesC. Mass spectrometry (MS) was also used to give possible fragmentation patterns. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:15:26