High molecular mass polystannanes via dehydropolymerization of di(n-butyl)stannane

Abstract

The dehydropolymerization of Buⁿ₂SnH₂, catalysed by [Zr(C₅H₅)(C₅Me₅){Si(SiMe₃)₃}Me], produces cyclic (SnBuⁿ₂)_n oligomers and long H(SnBuⁿ₂)_nH polystannane chains (M_wM_n= 17 500/7800), which exhibit a long-wavelength electronic absorption (λ_max= 382 nm) and emit green light (λ_max= 505 nm; 337.1 nm excitation).