title: [HL2][P(1,2-O2C6Cl4)3] (L = THF, DMF): Brønsted acid initiators for the polymerization of n-butyl vinyl ether and p-methoxystyrene.
abstract: The development of solid, weighable Brønsted acids featuring the hexacoordinated phosphorous(v) anion [TRISPHAT]-are reported. H(DMF)2[1] and H(THF)2[1] {[1]-= [P(1,2-O2C6Cl4)3]-} were synthesized and fully characterized by1H,31P,13C and 2D-NOESY NMR spectroscopy, X-ray crystallography, mass spectrometry and elemental analysis. Both, H(DMF)2[1] and H(THF)2[1] are found to be suitable initiators for the polymerization of n-butyl vinyl ether and p-methoxystyrene. Optimal polymerization results for these single-component initiators were generally obtained at -50 °C where high molecular weight polymers were isolated in high yield.1H NMR spectroscopic analysis and dynamic light scattering of solutions of the isolated polymers provide evidence for a branched structure which presumably arises from chain transfer.
authors.affiliation: Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6 T 1Z1, Canada. dgates@chem.ubc.ca.
authors.forename: Khatera
authors.initials: K
authors.lastname: Hazin
authors.forename: Spencer C
authors.initials: SC
authors.lastname: Serin
authors.forename: Brian O
authors.initials: BO
authors.lastname: Patrick
authors.forename: Maria B
authors.initials: MB
authors.lastname: Ezhova
authors.forename: Derek P
authors.initials: DP
authors.lastname: Gates