Issue 18, 2017

[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 by 1H, 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.

Graphical abstract: [HL2][P(1,2-O2C6Cl4)3] (L = THF, DMF): Brønsted acid initiators for the polymerization of n-butyl vinyl ether and p-methoxystyrene

Supplementary files

Article information

Article type
Paper
Submitted
21 déc. 2016
Accepted
30 mars 2017
First published
12 avr. 2017

Dalton Trans., 2017,46, 5901-5910

[HL2][P(1,2-O2C6Cl4)3] (L = THF, DMF): Brønsted acid initiators for the polymerization of n-butyl vinyl ether and p-methoxystyrene

K. Hazin, S. C. Serin, B. O. Patrick, M. B. Ezhova and D. P. Gates, Dalton Trans., 2017, 46, 5901 DOI: 10.1039/C6DT04820J

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