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• 12107-35-6 Na[CpMo(CO)3] 
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Relevant academic research and scientific papers

GEZIELTE SYNTHESE DREIKERNIGER HETEROMETALL-CLUSTER MIT VIER VERSCHIEDENEN GERUESTATOMEN

The trinuclear heterometallic cluster Va-Vc possessing a tetrahedral framework of four different atoms (MPdPtC) have been prepared from (μ-2-MeC3H4)(μ-Br)PdPt(PPr3i)2 (IV) and Na (M = Cr, M, W).Complex IV is obtained from (μ-2-MeC3H4)(μ-C5H5)PdPt(PPr3i)2 and Me3SiBr by bridge-ligand exchange.Following the same concept, the synthesis of the Pt2Mo and Pt2W heterometallic clusters VIIIa, VIIIb has also been achieved.

Stepwise synthesis of heteronuclear Pt2M and PdPtM clusters (M = Cr, Mo, W)

The dinuclear complex (μ-C5H5)(μ-2-MeC3H4)Pt 2(P-i-Pr3)2 (1), which is prepared from (η5-C5H5)Pt-(η3-2-MeC 3H4) and Pt(P-i-Pr3)2, reacts with Me3SiBr to produce the structurally related compound (μ-2-MeC3H4)(μ-Br)Pt2(P-i-Pr 3)2 (4). Reaction of 4 with [(C5H5)M(CO)3]Na (M = Mo, W) leads to displacement of the bridging bromide by the tricarbonyl(cyclopentadienyl)metal anion and formation of the trinuclear clusters (C5H5)(2-MeC3H4)(CO) 3(P-i-Pr3)2Pt2M (5, 6). The analogous mixed-metal PdPtM complexes 9-11 are similarly prepared, starting from (μ-C5H5)(μ-2-MeC3H 4)PdPt(P-i-Pr3)2 (7) via (μ-2-MeC3H4)(μ-Br)-PdPt(P-i-Pr3) 2 (8) as the intermediate that subsequently reacts with [(C5H5)M(CO)3]Na (M = Cr, Mo, W) to form (C5H5)(2-MeC3H4)(CO) 3(P-i-Pr3)2PdPtM (9-11). The IR and 1H, 13C, and 31P NMR spectroscopic data of 5, 6, and 9-11 confirm that the new heteronuclear clusters contain a tetrahedral Pt2MC or PdPtMC framework, the carbon atom of which belongs to a triply bridging CO group.