Au(III)/Au(I) and Au(III)/Pt(II) double salt compounds

INOR 306

Linda H. Doerrer, Michael I. Kahn, mikahn@bu.edu, and Tim J. Brunker, tbrunker@bu.edu. Chemistry Department, Boston University, Metcalf Center for Science and Engineering, 590 Commonwealth Avenue, Boston, MA 02215-2521

Metallophilic interactions present a viable means for the preparation of one-dimensional metal-metal contacts in compounds that may one day be used as wires in nanoelectronic materials.  The Doerrer group has established a synthetic route to polypyridyl double salts (Hayoun et al Inorg. Chem. 2006, 45, 6120), with cation/anion pairings that include Pt(II)/Au(III), Pt(II)/Au(I), and Au(III)/Au(III).  We have extended this concept to Au(III)/Au(I) and Au(III)/Pt(II) pairings and will discuss the synthesis of new double salts in this family.  We will also discuss the electronic effects observed in these double salt complexes using substituted bipyridine ligands.  The syntheses of [Au(L2)Cl2)]+ (L2 = bpy, Me2bpy) and [Pt(ppy)Cl2]- (ppy = phenylpyridyl) double salts will be presented.  Electronic studies of double salts containing these anions and cations will be presented in the context of UV-vis, near-IR, IR, and NMR spectroscopic analyses.