Synthesis and characterization of early and late transition metallocalixarene complexes [electronic resource] /Show full item record
|Title||Synthesis and characterization of early and late transition metallocalixarene complexes [electronic resource] /|
|Author||Martinez-Ortega, Bernat Abeit|
|Description||Title from dissertation title page (viewed Dec. 6, 2010).
Thesis (Ph. D.)--Texas Christian University, 2010.
Department of Chemistry; advisor, Tracy A. Hanna.
Includes bibliographical references.
Text (electronic thesis) in PDF.
"Calixarenes are macrocyclic oligomers of phenols bridged with methylenes. They have been extensively studied because of their unique structure, complexing abilities, conformational flexibility, and reactivity. Their chemistry has been applied as an oxo platform for catalyst model studies. The coordination chemistry of the simple calixarenes is now relatively well developed. By contrast, metal compounds containing the larger ring systems, for example calixarene, are still quite rare. Our interest in calixarene chemistry is related to our longer-term research objectives. We are interested in modeling a bifunctional oxo surface, in which two metals can react in a cooperative manner. This requires a conformation that will allow two metals, or a metal and non-metal, to interact on the calixarene "surface" (Chapter1). We synthesized a series of deprotonated calixarenes "calix[n]anions" (including mono- to dianionic species) by the reaction of parent calixarene with alkali metal bases (Chapter 2). In this context, we were able to synthesize and characterize a variety of Ti(IV) (Chapter 3), Mo(VI) (Chapter 4) and Pd(II) (Chapter 5) metallocalixarene complexes using calixanions as starting materials in which the transition metal binds directly to the oxygen surface of the calixarene. Finally, the reactivity of the palladium calixarene complexes was tested and successfully utilized in the synthesis and characterization of the first examples of Pd(II)/Ti(IV) and Pd(II)/Mo(VI) heterobimetallic complexes (Chapter 6)"--Abstract.
Transition metal complexes.
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- Theses and Dissertations