Pyridine vs. Bipyridine Coordination in PtCl2 Complexes of 4‐tButyl‐4'‐(4‐pyridinyl)‐2, 2'‐bipyridine12. Issue 14 (22nd May 2013)

• Record Type: Journal Article
• Authors: Rank, Matthias; Zabel, Manfred; Winter, Rainer F.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 639:Issue 14(2013)
• Page Start: 2565
• Page End: 2574
• Publication Date: 2013-05-22
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201300139
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The reaction of the new terpyridine ligand 4‐^{<italic>t</italic>}butyl‐4'‐(4‐pyridinyl)‐2, 2'‐bipyridine <bold>L </bold>with various sources of "PtCl₂" selectively yields either <italic>trans‐</italic>[PtCl₂(<bold>L</bold>)₂] (<bold>1</bold>) with <bold>L </bold>bonded in a monodentate fashion via its pendant 4‐pyridyl ring or <italic>cis</italic>‐[PtCl₂(<bold>L</bold>)] (<bold>2</bold>), where <bold>L </bold>coordinates in a bidentate fashion through its 2, 2'‐bipyridine subunit. The molecular structures of <bold>L</bold> and of complex <bold>1 </bold>were determined by X‐ray crystallography and exhibit intra‐ and intermolecular hydrogen bonding. We have also converted the dichloro complex <bold>2</bold> into the bis(coumarin thiolate) complex <bold>3</bold>. Owing to their free imine coordination sites, complexes <bold>1–3 </bold>constitute interesting building blocks for multimetal structures in a "complexes as ligands" approach. The reductive behaviour of <bold>L</bold> and of complexes <bold>1–3</bold> has been investigated by cyclic and square wave voltammetry.</p> </abstract>