New high-nuclearity Ni–Pt carbonyl clusters: synthesis and X-ray structure of the ordered [HNi24Pt17(CO)46]5− and the substitutionally Ni/Pt disordered [Ni32Pt24(CO)56]6− cluster anions

Abstract

Condensation between preformed Ni–Pt and Pt carbonyl clusters leads to the new [H_6−nNi₂₄Pt₁₇(CO)₄₆]ⁿ⁻ (n = 5, 6) and the substitutionally Ni/Pt disordered [Ni₂₄(Ni_12−xPt_x)Pt₂₀(CO)₅₆]⁶⁻ (x = 4) carbonyl clusters, the latter of which represents the highest nuclearity homoleptic carbonyl cluster anion so far reported.