Synthesis and X-ray Structures of [Os3Pt(CO)9(μ4-η2-C≡CPh)(η1-C≡CPh)(L)] (L = 4,4′-Dimethyl-2,2′-bipyridine, 4,4′-bis(tert-butyl)-2,2′-bipyridine): New Heterometallic Clusters with a μ4-η2- and an η1-Acetylide Group on a Spiked-Triangular Metal Core

Abstract

Treatment of [Os 3 (CO) 10 (NCMe) 2 ] with platinum bis(alkynyl) complexes cis-[Pt(CϵCPh) 2 (L)] [L = 4,4Ј-dimethyl-2,2Ј-bipyridine (Me 2 bipy), 4,4Ј-bis(tert-butyl)-2,2Ј-bipyridine (tBu 2bipy)] at room temperature readily affords the novel, spikedtriangular heterometallic cluster complexes [Os 3 Pt(CO) 9 (µ 4η 2 -CϵCPh)(η 1 -CϵCPh)(L)] (L = Me 2 bipy 1, tBu 2 bipy 2) in Results and DiscussionThe mixed-metal cluster compounds [Os 3 Pt(CO) 9 (µ 4 -η 2 -CϵCPh)(η 1 -CϵCPh)(L)] (L ϭ Me 2 bipy 1, tBu 2 bipy 2) were [a]