Main content

Synthesis and Characterization of Novel Multidentate 1,2,3,5- Dithiadiazolyl Radical Ligands with Potential Luminescent and Magnetic Applications

Show full item record

Title: Synthesis and Characterization of Novel Multidentate 1,2,3,5- Dithiadiazolyl Radical Ligands with Potential Luminescent and Magnetic Applications
Author: Mackenzie, Scott B
Department: Department of Chemistry
Program: Chemistry
Advisor: Preuss, Kathryn E
Abstract: Novel, multidentate (denticity greater than two) 1,2,3,5-dithiadiazolyl radical ligands have been synthesized and characterized. The 4-(2',2''-bipyrid-6'-yl)-1,2,3,5- dithiadiazolyl (bipyDTDA) radical ligand has been characterized via X-ray crystallography and displays cis-cofacial dimerization in the solid state. BipyDTDA features a tridentate nitrogen coordination pocket and was successfully coordinated to Ln(III) metal centers including Ce(III), Pr(III) and Dy(III). The complexes above are structurally interesting in terms of Ln-Thiazyl compounds as they are isostructural throughout most of the lanthanide series. An additional undimerized complex SbCl3(bipyDTDA) has also been synthesized which contains contacts that imply a potential pathway for intermolecular magnetic coupling. A second DTDA ligand 6,6'-bis-1,2,3,5-dithiadiazolyl-2,2'-bipyridine (bisDTDAbipy) has been prepared and characterized via DART-MS. The EPR spectrum for this diradical species exhibits a five-line pattern consistent with two non-interacting radical centers each with coupling to two equivalent 14N nuclei. Coordination of bisDTDAbipy has yet to be achieved.
URI: http://hdl.handle.net/10214/9483
Date: 2016-01


Files in this item

Files Size Format View
Mackenzie_Scott_201601_MSc.pdf 11.89Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record