Selective one-pot syntheses of PtII–CuI heterobimetallic complexes of 4,5-diazafluorenide derivatives

Abstract

We report both the stepwise and one-pot syntheses of Pt^II–Cu^I hetero-dinuclear complexes using 4,5-diazafluorenide (L⁻) and 9-(2-(diphenylphosphino)ethyl)-4,5-diazafluorenide (L_p⁻) as binucleating ligands. In the case of L_p⁻, the tethered phosphine arm helps anchor the Pt^II centre onto the carbon site of the diazafluorenide and the Cu^I centre is bound to the N,N-chelate site. In the case of L⁻, the Cu^I centre is bound to the carbon site of diazafluorenide and the Pt^II centre is coordinated to the N,N-chelate site.