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Scatena, Rebecca (2015) Design, Synthesis and XRD Structural Characterization of New Coordination Polymers Based on Trinuclear Unit [Cu3(μ3-OH)(pz)3]2+ (pz=pyrazolate ion) and Mono- or bicarboxylates. [Magistrali biennali]

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Abstract

Coordination Polymers (CPs) are multifunctional materials having applications especially in catalysis and gas storage, which originates from high porosity and regularly dispersed coordination metal sites. Here we report the syntheses of CPs, incorporating an active trinuclear triangular copper(II) site, [Cu3(μ3-OH)(μ-pz)3]2+, by employing different bicarboxylate linkers having various size, flexibility, steric hindrance and conformational freedom. Moreover, also chiral (S)-2-Methylsuccinate, besides its racemic mixture, was employed. The analysis of the structural peculiarities induced by these building blocks was carried out by using single crystal X-ray diffraction (SC-XRD). The precise atomic positions of the three-dimensional packing allow defining pores sizes, shapes and surface structures suggesting structure-property relationships. Structure determination evidenced that bicarboxylates permits trinuclear moieties further self-assemble to generate CPs and that different reaction conditions may generate different CPs through specific coordination ways of carboxylate group. In addition, structure visualizations highlighted the relevant role of specific supramolecular interactions (particularly H-bonds) in the molecular assemblies. CPs presenting porous structures showed a phase transition to a compact arrangement after solvent removal according to a 1° generation porosity.

Item Type:Magistrali biennali
Corsi di Diploma di Laurea:Scuola di Scienze > Chimica
Uncontrolled Keywords:MOF; copper complex; X-ray diffraction; single crystal
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/06 Chimica organica
Codice ID:49521
Relatore:Pandolfo, Luciano
Correlatore:Nestola, Fabrizio
Data della tesi:09 July 2015
Biblioteca:Polo di Scienze > Dip. di Scienze Chimiche - Biblioteca
Collocazione:Tesi 3794
Note per la fruizione:La copia a stampa della tesi e' disponibile presso la biblioteca con la collocazione indicata
Tipo di fruizione per il documento:consultazione / prestito / riproduzione
Tesi sperimentale (Si) o compilativa (No)?:Yes

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