Styrene Polymerization under Ambient Conditions by using a Transient 1,3,2-Diazaphospholane-2-oxyl Complex.
Tobias HeurichZheng-Wang QuRobert KunzmannGregor SchnakenburgMarianne EngeserSenada NožinovićRainer K StreubelPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2018)
A combined theoretical and experimental study on the formation and reactivity of a P-OTEMP (P-bound TEMPO (TEMPO=2,2,6,6-tetramethyl-piperidin-1-oxyl)) substituted 1,3,2-diazaphospholane W(CO)5 complex is presented, including DFT-based mechanistic details. The complex possesses a thermally labile O-N bond that cleaves homolytically yielding the transient 1,3,2-diazaphospholane-2-oxyl complex [(CO)5 W(R2 PO. )], which acts as a radical initiator for styrene polymerization under ambient conditions.