CpFe L

CpFe(L)2CEC-AuPPh3 L = PPh3, PMe3 (L)2 = dppe... 

The modification of the CpFe(L)2+ fragment in 39 with chiral phosphorus donor ligands based on chiral 1,2-dioles was investigated by Kxindig and coworkers and tested in the reaction of acrolein derivatives (Scheme 9.28) [72-74],... 

Complex 9 and [CpFe(o-BPXCO)CH 2C1 ] [o-BP = tri(o-biphenyl)-phosphite] were also prepared by the reaction of HC1 with [CpFe(L)-(CO)CH2OEt] (L = PPh3, o-BP) (47). Alkylation of the two complexes with sodium /crt-butyl acetoacetate and pyrroline cyclohexanone enamine yielded six of the eight possible alkylation products. The two products where L was o-BP and the nucleophile was tort-butyl acetoacetate did not form, presumably because of excessive steric hindrance. The excess of one diastereomer over the other ranged from 10 to 64%. 

Photolysis of the arene complexes in the presence of monodentate ligands, e.g. carbon monoxide, leads to new complexes of the type CpFe(L) whereas in pure aprotic solvents, ferrocene and iron salts are formed Investigation of the photo-lytic reaction of an iron arene complex with excess ethylene oxide in methylene chloride solution (Meier and Rhis ) showed that a crystalline crown ether complex (structure shown in Fig. 9) was obtained in high yield. Only traces of dioxane could be detected. 

Details of the preliminary lUPAC nomenclature for metallacarbaborane clusters are described in the 1990 recommendations. However, care is needed in interpreting compound names in the literature. Over the years, there has been some variation with respect to the order in which boron, carbon, and metal atoms are numbered in a given cluster. An example is (4), which is described as 3-Cp-3-Fe-l,2-C2B10H12 by the lUPAC 1990 recommendations, but is also found in the literature as 3-(CpFe)-l,2-C2BioHi2, 1-Cp-l-Fe-2,3-C2BioHi2, or l-(CpFe)-2,3-C2BioHi2. 

Very recently the [ CpFe(l,2-(PPh2)2-4- Bu) Rh(S- Bu)(CO)] complex containing a terminal tert-butylthiolato ligand has been shown to be active in the hydro-formylation of 1-octene at 1 MPa, but with a mediocre selectivity in linear aldehyde (52 %) however, the complex was recovered unchanged after catalysis [33], A few studies have been carried out on alkoxycarbonylation, but the catalytic activities are relatively low [14, 33],... 

The syntheris, diermal behaviour, and electrochemistry of [Fp(CO(CX2)3CX Fp] QC = H, F) have been reported. The redox-catalysed carbcmylation of [CpFe(CX))CL)(Me)] (L = various phosphines) in MeCN is prtqtosed to involved n d formation of [CpFe(L)(NCMe)(COMe)] then rate-limiting reaction widi The crystal structure and molecular mechanics of... 

Diborathiacyclopentadienyl Complexes.—New tetradecker complexes containing the l,3-dimethyl-4,5-diethyl-l,3-dibora-2-thiacyclopentadienyl ligand (L) have been synthesized, viz. [CpFe(L)M(L)FeCp] (M = Fe and Co). ... 

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