Conversion of the silicone poly(dimethylsiloxane) by thallium(I) ethoxide into the ladder polymer [{Tl2(OSiMe2)O}2]n; X-ray structure of the product and of thallium(I) triphenylsilanolate
Abstract
Treating silicone grease (OSiMe2)m with an excess of TlOEt in PhMe at ambient temperature instantly yields the poly(thalliodimethylsiloxane)[{Tl2(OSiMe2)2O}2]n which, like [Tl(µ3-OSiPh3)]4(obtained similarly from the ethoxide and HOSiPh3), has been characterised by X-ray crystallography; both structures contain Tl4O4 cuboids [Tl–O distances and O–Tl–O angles are in the range 2.48(2)–2.78(2)Å and 75.4(5)–84.8(6)°].