The flexibility of bridging phosphinoyl ligands: new classes of triplatinum(II) and diplatinum(I) complexes
Abstract
The reactions of [Pt2(µ-OH)2(POPh2)2(PR3)2] with (i) HBF4 or HPF6 to give the tiplatinum complexes [Pt3(µ3-OH)(µ-OPPh2)3(PR3)3]2+(2) and (ii) alcohols to give the diplatinum complexes [Pt2(µ-OPPh2)2(PR3)2](4) are described; the X-ray crystal structures of (2a) and (4a) show the OPPh2 ligand is capable of spanning Pt ⋯ Pt distances of 2.55 to 3.71 Å.