Teaching old tricks to new dogs – rational synthesis of multi-decker complexes featuring cyclo-P5 decks†
Ingo
Krossing 
b
and
Manfred
Scheer
*a
b
and
Manfred
Scheer
*a
Abstract
A rational synthetic pathway towards a series of cyclo-P5-bearing multi-decker complexes was developed. The combination of [Cp*Fe(μ,η5 : 5-P5)] (A) with low-valent transition metal cations yields a series of triple-decker complexes [Cp*Fe(μ,η5 : 5-P5)MCp′′′][WCA] (M = Cr − Ni; WCA = weakly coordinating anion, Cp′′′ = 1,2,4-tBu3C5H2). Utilizing the arene complexes [M(C6R6)2][WCA]n (M = Fe, Co) instead allowed the synthesis of the unprecedented cyclo-P5-containing quadruple-decker complexes [{Cp*Fe(μ,η5 : 5-P5)}2M][pf]n (M = Fe, Co).
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