Theses and Dissertations

Date of Award

7-1-2024

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Manar Shoshani

Second Advisor

Haoyuan Chen

Third Advisor

Arnulfo O. Mar

Abstract

Metal hydrides are moieties that are present in a variety of applications as intermediates in catalysis. Despite the vast utilization of metal hydrides, monometallic metal hydride complexes bear limitations in inert-bond activation and functionalization. A strategy to overcome these limitations and access more challenging reactivity is utilizing metal-metal cooperativity on a single platform to further activate hydride moieties. Although incorporating multiple metal centers on a single ligand scaffold has been realized, access to heterometallic hydride-bearing complexes is a greater synthetic challenge. Given the limitations in accessing such systems, the reactivity and electronic structure of heterometallic hydrides are seldom studied. Recently, our group reported a novel nickel-aluminum heterotrimetallic hydride complex demonstrating enhanced reactivity in comparison to monometallic precursors in the hydroboration of N-heterocycles. Our work features a rare report of three-center bonding within an Al-H-Ni subunit with sterically accessible Lewis-acidic Al centers. To aid in our understanding of the electronic structure and enhanced catalytic reactivity of this system, the synthesis of related heterometallic complexes, bearing a Ni-H-Al subunit, with electronically differentiating ancillary ligands was undertaken. Synthesis, characterization, and electronic structure studies will be discussed.

Comments

Copyright 2024 Aleida Guadalupe Gonzalez. https://proquest.com/docview/3116523701

Download

Share

COinS