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 (MwMn= 17 500/7800), which exhibit a long-wavelength electronic absorption (λmax= 382 nm) and emit green light (λmax= 505 nm; 337.1 nm excitation).
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