A chain copolymer from WCl2(PMe2Ph)4 and [TlOCH2CF3]4

✍ Scribed by Helmut Rothfuss; Kirsten Folting; Kenneth G. Caulton

• Book ID: 104138736
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 878 KB
• Volume: 212
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)92322-3

✦ Synopsis

A combination

of WCl,(PMe,Ph), and [TlOCH,CF,], crystallize from hexane solution as a I:1 material whose structure shows it to be an alternating chain copolymer. The link between the W-and Tl-containing monomers IS composed of weak Tl/Cl interactions between otherwise not significantly distorted trans-WCl,P, octahedra and Tl,O., cubes. The compound crystallizes as two distinct polymorphs, which differ m the Tl/Cl bond lengths and also the conformation of the phenyl substituents in the W(PMe,Ph), substructure.

Electronic spectral data support the idea that a Tl/W adduct persists m hexane solution, and it IS suaested that the binding force in both solid and solution is a weak chargk transfer complexation.