Abstract
A combination of WCl 2(PMe 2Ph) 4 and [TlOCH 2CF 3] 4 crystallize from hexane solution as a 1:1 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 2P 4 octahedra and Tl 4O 4 cubes. The compound crystallizes as two distinct polymorphs, which differ in the Tl/Cl bond lengths and also the conformation of the phenyl substituents in the W(PMe 2Ph) 4 substructure. Electronic spectral data support the idea that a Tl/W adduct persists in hexane solution, and it is suggested that the binding force in both solid and solution is a weak charge transfer complexation.
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