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Depolymerization of Poly(phosphinoboranes): From Polymers to Lewis Base Stabilized Monomers

Marquardt, Christian ; Hegen, Oliver ; Vogel, Ariane ; Stauber, Andreas ; Bodensteiner, Michael ; Timoshkin, Alexey Y. ; Scheer, Manfred


We report on depolymerization reactions of poly(phosphinoboranes). The cleavage of the polymers [H2PBH2](n) (2a), [tBuHPBH(2)](n) (2c), [PhHPBH2](n) (2e) and the oligomer [Ph2PBH2](n) (2b), with strong Lewis bases (LBs), in particular with NHCs, leads to the corresponding monomeric phosphanylboranes (RRPBH2LB)-R-1-P-2. It is observed that the depolymerization depends on the strength and stability ...


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