Zeolite Encapsulated Poly(phosphaalkynes): A New Approach to an Elusive Target

1. Zeolite Encapsulated Poly(phosphaalkynes): A New Approach to an Elusive Target Cameron Jones, Department of Chemistry, Monash University, Melbourne, VIC, 3800, Australia. Poly(phosphaalkynes), the phosphorus analogues of poly(acetylenes), are unknown due to the propensity of –P=C(R)- fragments to undergo cycloaddition reactions. To circumvent this, we seek to encapsulate small phosphaalkynes, e.g. PCMe, in the 1-D channels ofsuitable zeolites (and related MOFs) and to subsequently investigate their polymerization. The formed materials have the potential to exhibit interesting opto-electronic properties and charge storage capabilities. Further progress has been made toward the characterization of the properties of the target materials in the second year. Comparisons with non- encapsulated PCMe “polymers” have been carried out and revealed significant differences. In related work, a variety of group 14 element complex induced phosphaalkyne oligomerizations, PC bond cleavage and PC bond hydrometallation reactions have afforded unprecenedented complex types, e.g. the first phosphadisilacyclobutadienes (left) and terminal hydrogermylation products (right). The latter react with excess PCMe, forming various phosphaalkyne oligomers.