6th Annual Judith Ramaley Celebration of Research and Creative Scholarship
 
Online Book of Abtracts

Poster #69

Factors that Control the Extent of Polymerization in the Reaction of 1,4-Bis(Diphenylphosphino)Butane with 1,4-Bis(Bromomethyl)Benzene

Matthew J. Lindell

Faculty Mentor: Thomas W. Nalli

One goal of our research group is to study the formation of polycationic salts from the reactions of tertiary bisphosphines with alkyl dihalides. Alkyl dihalides, consisting of two distal bromine functional groups, utilize a simple bimolecular substitution reaction with tertiary bisphosphines to form polyphosphonium salts.  For my research 1,4-bis(diphenylphosphino)butane (1) was reacted with 1,4-bis(bromomethyl)benzene (2) to form the polyphosphonium salt, which was characterized by ³¹P, ¹H, and ¹³C NMR spectroscopy in DMSO-d₆ solvent. Investigation of reaction parameters includes examining how a variety of reaction solvent systems, temperatures, and time spans dictate the extent of polymerization. Synthesis of reference mono- and bisphosphonium salts aided the designation of NMR resonances of the polyphosphonium salt.