Polyhydrido-platinum clusters: synthesis and X-ray crystal structures of [Pt3H6(PBu3 t)3], [Pt4H2(PBu3 t)4], and [Pt4H8(PPri 2Ph)4]

Abstract
Hydrogen reacts with [Pt(C2H4)2(PBu3 t)] to give the triangular complex [Pt3H6(PBu3 t)3](1) which is dehydrogenated with C2H4 to form the tetrahedral complex [Pt4H2(PBu3 t)4](2), whereas [Pt(C2H4)2(PPr2 iPh)] reacts with hydrogen yielding directly the four-metal-atom sphenoidal cluster [Pt4H8(PPr2 iPh)4](3).

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