Supramolecular organoplatinum(iv) chemistry: a nanotube structure supported by hydrogen bonds

Abstract

The oxidative addition of 4-BrCH₂C₆H₄-C(=O)NH-t-Bu to [PtMe₂(bu₂bipy)], bu₂bipy = 4,4′-di-tert-butyl-2,2′-bipyridine, gave [PtBrMe₂(CH₂C₆H₄-C(=O)NH-t-Bu)(bu₂bipy)], which reacted with AgX and a bridging ligand LL to give binuclear complexes [{PtMe₂(CH₂C₆H₄-C(=O)NH-t-Bu)(bu₂bipy)}₂(μ-LL)]X₂, LL = 1,4-pyrazine or 4,4′-bipyridine, X = BF₄ or PF₆. The complexes all take part in hydrogen bonding through either NH⋯OC, NH⋯FB or NH⋯FP interactions and, in the case with LL = 4,4′-bipyridine, X = PF₆, a supramolecular structure containing tubes is formed.