99642-80-5Relevant academic research and scientific papers
Platinum hydride cluster complexes
Ramachandran, Ravindranath,Puddephatt, Richard J.
, p. 2256 - 2260 (2008/10/08)
The cluster cation [Pt3(μ3-H)(μ-dppm)3]+ (1) is easily and reversibly protonated to give [Pt3(?3-H)2(μ-dppm)3] 2+ (3) or, in the presence of trifluoroacetate, [Pt3(μ3-H)(μ-O2CCF 3)(μ-dppm)3]+ (4). With a large excess of acid below -60°C, the trihydride [Pt3(μ2-H)3(μ-dppm)3] 3+ (5) was formed. Complex 3 reacts with CO to give H2 and the carbonyl cluster cations [Pt3(μ3-CO)(μ-dppm)3]2+ and [Pt3(μ3-CO)(CO)(μ-dppm)3]2+, with phosphite ligands P(OR)3 (R = Me, Et, Ph) to give [Pt3H(μ2-H){P(OR)3}(μ-dppm) 3]2+ (6), and with PPh3 to give [Pt2H(PPh3)-(μ-dppm)2]+. The new clusters are characterized by multinuclear NMR techniques. The reversible addition of protons to 1 defines a stepwise, bimolecular, electrophilic mechanism of substitution of the Pt3(μ3-H) ligand.
