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COMPLECȘI Ln(III)-Bi(III) ÎN BAZA IONILOR TRIETILENTETRAAMINHEXAACETAT  PRECURSORI MOLECULARI PENTRU OXIZII MICȘTI BiLnO3

Authors: Nelea POPA; Ion BULIMESTRU; Aurelian GULEA;

COMPLECȘI Ln(III)-Bi(III) ÎN BAZA IONILOR TRIETILENTETRAAMINHEXAACETAT  PRECURSORI MOLECULARI PENTRU OXIZII MICȘTI BiLnO3

Abstract

Lucrarea este axată pe sinteza și studiul unui șir de combinații coordinative heterometalice ale lantanidelor(III) și bis­mutului(III) cu formula generală LnBi(ttha)·nH2O (ttha6- = trietilentetraaminhexaacetat) pe rol de precursori moleculari pentru obținerea oxizilor micști BiLnO3. În baza spectrelor IR a fost stabilită prezența a două serii de complecși analogi (Ln(III) = La, Pr, Nd, Gd, Dy, unde n=7 și Ln(III) = Ho, Er, unde n=10). Analiza termogravimetrică efectuată în flux de oxigen generează oxidul preconizat BiLnO3 deja la 600oC, pe când în flux de azot acest proces nu este finalizat nici la 900oC. Difracția razelor X pe pulberile obținute la descompunerea termică a precursorilor a confirmat că viteza de cal­cinare și natura ionilor Ln(III) nu influențează compoziția reziduurilor finale, în toate cazurile obținându-se oxizii heterometalici preconizați BiLnO3 în stare pură.

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Keywords

Chemistry, QH301-705.5, coordination compounds, molecular precursors, lanthanide(iii), bismuth(iii), triethylenetetraaminehexaacetate, heating rate, mixed-oxide., combinații coordinative, precursori moleculari, lantanide(III), bismut(III), trietilentetraaminhexaacetat, viteză de încălzire, oxid mixt., Biology (General), QD1-999

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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