Macropolyhedral boron-containing cluster chemistry: nineteen-vertex [(PPh3)NiS2B16H12(PPh3)] and eighteen-vertex S2B16H14(PPh3)

Abstract

Reaction of S₂B₁₆H₁₆ and [NiBr₂(PPh₃)₂] in the presence of base has yielded nineteen-vertex [(PPh₃)NiS₂B₁₆H₁₂(PPh₃)], of which the basic cluster structure consists of a nido-shaped nine-vertex {1-NiB₈} subcluster and a closo-shaped twelve-vertex {1,4-NiSB₁₀} subcluster fused with the {1′,3′,4′ : 1,2,3}{NiB₂} triangular face in common; a related co-product is non-metallated eighteen-vertex S₂B₁₆H₁₄(PPh₃), of which the basic cluster structure consists of a nido-shaped {B₈} eight-vertex subcluster and a nido-shaped {SB₉} eleven-vertex subcluster fused with the {3′,8′ : 6,7} diboron edge in common.