Synthesis and crystal structure of [Mo"2FePt(μ-σ,σ',σ'':η^5-CC"5H"4)"2(CO)"4{HB(pz)"3}2][HB(pz)"3 = Hydrotris(pyrazol-1-yl)borate]; A complex derived from a 1,1'-ferrocene derivative with CMo(CO)"2{HB(pz)"3} substituents

Treatment of [Mo(CO)"6] in tetrahydrofuran, with 1,1'-dilithioferrocene in light petroleum, followed by (CF"3CO)"2O and tmeda (Me"2NCH"2CH"2NMe"2) affords the ferrocene- substituted bis(alkylidynemolybdenum) complex [Mo"2Fe(μ-σ, σ',:η^5-CC"5H&qu...
Ausführliche Beschreibung

Treatment of [Mo(CO)"6] in tetrahydrofuran, with 1,1'-dilithioferrocene in light petroleum, followed by (CF"3CO)"2O and tmeda (Me"2NCH"2CH"2NMe"2) affords the ferrocene- substituted bis(alkylidynemolybdenum) complex [Mo"2Fe(μ-σ, σ',:η^5-CC"5H"4)"2(O"2CCF"3)"2 (CO)"4(tmeda)"2]. The latter with K[HB(pz)"3] [HB(pz)"3 = hydrotris(pyrazol-1-yl)borate] in CH"2Cl"2 gives [Mo"2Fe(μ-σ,σ':gh^5 -CC"5H"4)"2(CO)"4{HB(pz)"3}"2], which with [Pt(cod)"2] (cod = cyclo-octa-1,5-diene), in light petroleum saturated with ethylene, yields the tetranuclear metal complex [Mo"2FePt(μ-σ,σ',δ'':η^5-CC"5H"4)"2(CO)"4{HB(pz)"3}"2]. The structure of this product was established by X-ray diffraction, and the results of this study are compared with those obtained for related compounds in which the two metal-metal bonds of an acyclic trimetal system, in this case MoPtMo, are each spanned by an alkylidyne group and semi-bridged by a carbonyl ligand. Ausführliche Beschreibung