Di- and Trinuclear  -Aryl Iron and Manganese Complexes

Recent chemistry of the η5-cyclopentadienyl dicarbonyl iron anion

“…This was the first isolation and characterization of this extremely reactive anion originating from the Fp 2 dimer [37]. The NaK 2.8 alloy method was also used to generate [ZnCl]Fp salt in situ simply by the addition of ZnCl 2 to the reaction mixture [29]. The authors claim this salt is useful for avoiding side reactions because the Fp anion is a good reducing agent.…”

“…To provide a useful route to mono-, di-, and trinuclear -aryl iron complexes via palladium catalysis, Beletskaya and coworkers reacted [29] FpZnCl with triiodobenzenes or diiodobenzenes (Scheme 51). Many factors such as reaction times, equivalents of FpZnCl, types of catalysts (PdCl 2 (PPh 3 ) 2 and Pd 2 (dba) 3 ), solvents (THF and CHCl 3 ), and catalyst ligands (trifurylphosphine and AsPh 3 ) were varied.…”

“…In addition to its nucleophilicity and basicity characteristics, the Fp anion is also easily oxidized and thus is a good reducing agent [29]. In fact, solutions of Fp anion readily undergo oxidation when exposed to air and should be kept free of oxygen.…”

Synthesis of mono-, di- and tripalladated 1,3,5-benzenetristyryl complexes. CO insertion to give a dipalladated indenone

“…69 There is also a report of a tripalladated arylamine and a tetrapalladated pyrene, obtained by mechanochemical solvent-free oxidative addition of aryl halides to a Pd(0) complex. 70 Regarding other transition metals, only one trimetalated benzene with Mn, 1,3,5-C 6 H 3 [Mn(CO) 5 ] 3 , 71–73 and two further examples with Fe, 1,3,5-C 6 H 3 [Fe(η 5 -Cp)(CO) 2 ] 3 71–74 and 1,3,5-C 6 H 3 [Fe(η 5 -C 5 H 4 Me)(CO) 2 ] 3 , 75 have been reported so far.…”

Synthesis of Pd3Tl and Pd6Tl2 Complexes Based on a Trinuclear Aryl–Palladium(II) Complex Acting as a Metallaligand Toward Thallium(I) Through Tl–Arene and Tl–I Bonds

“…Suitable substituents ortho to Pd(II) may influence the reactivity of these complexes , or participate in formation of organic compounds. , We are trying to extend this chemistry to 1,3,5-tripalladated benzene derivatives with substituents ortho to each Pd. , Such complexes could have a huge potential for the Pd-mediated synthesis of organic polycyclic compounds. This is an almost unexplored field, with only three publications on 1,3,5-tripalladated arenes, two of them by our research group. − Even with other transition metals there are only three examples of 1,3,5-trinuclear derivatives (one Mn and two Fe complexes) …”