During the attempts to carry out Suzuki coupling reactions, the σ-bonded Pd−Caryl
benzochalcogenadiazolyl complexes trans-[ClPd(PPh3)2(C6H2BrN2E)] (E = S, Se) were
isolated. The corresponding bromo derivatives were also synthesized on purpose to
investigate their activity in Stille coupling reactions. A head-to-tail dimer trans-
[{ClPd(PPh3)(μ-C6H2BrN2Se)}2] was synthesized from the thermolysis of trans-
[ClPd(PPh3)2(C6H2BrN2Se)] in the presence of SeO2. The reduction potentials of the
mononuclear and dinuclear complexes were measured by cyclic voltammetry (CV) and
square wave voltammetry (SWV).
4,7-bis(2/4-pyridyl)benzochalcogenadiazole ligands were synthesized by Stille coupling
reactions and the 1,5-bis(4-pyridyl)naphthalene ligand was prepared by a Suzuki
coupling reaction. Reactions of the labile complex [BrRe(CO)4(NCMe)] with 4,7-bis(4-
pyridyl)benzochalcogenadiazole ligands in a 2:1 ratio afforded self-assembled molecular
rods [{ReBr(CO)4}2(μ-4,7-bis(4-pyridyl)benzochalcogenadiazoles)]. Palladium directed
molecular squares [(enPd)(μ-4,7-bis(4-pyridyl)benzochalcogenadiazole)]4[PF6]8 were
prepared by reactions of enPd(PF6)2 and 4,7-bis(4-pyridyl)benzochalco-genadiazoles in a
1:1 ratio. The optoelectronic properties of the ligands and the molecular rods were
investigated by CV and SWV, and by luminescence spectroscopy. The optical properties
of the square complexes were also studied by luminescence spectroscopy. / xvii, 152 leaves : ill. (some col.) ; 29 cm
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:ALU.w.uleth.ca/dspace#10133/2639 |
| Date | January 2010 |
| Creators | Hassan, Mohammad Rokib, University of Lethbridge. Faculty of Arts and Science |
| Contributors | Boere, Rene T |
| Publisher | Lethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry, c2010, Arts and Science, Department of Chemistry and Biochemistry |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
| Relation | Thesis (University of Lethbridge. Faculty of Arts and Science) |
Page generated in 0.0027 seconds