Iron, complexed with bipyridine ligands

Reactivity of dinuclear iron complexes with simple bidentate ligands such as 2,2 -bipyridine and 1,10-phenanthroline for oxidation of alkanes, toluene, dimethyl sulfide, trans-stilbene and adamantane was studied in CHjCN under Ar in the presence of oxidants (TBHP, CHP or H2O2). The effect of the number of the bridging ligand was found remarkable monobridged Fe20(L)4(X)2(C104)4 >... 

Lehn and coworkers have designed many double-helical compoimds. Copper(I), cobalt(II) and iron(II) were allowed to complex with the ethylene-bridged bis(bipyridine) (10) and bis(phenanthroline) (11) to examine the stereochemical preferences of the metal ions. When ligand (10) was treated with copper(I), a complex of 2 2 stoichiometry (molecular weight confirmed by... 

The elegant self-assembly of rm-bipyridine ligands with iron(ll) afforded novel polynuclear complexes possessing cyclic double-helix character, termed circular helicates 20 <97JA10956>. 

This is illustrated by the heterochiral triply helical dinuclear Fe(II) complex (5.16). Thus when the bis(bipyridine) ligand 14 with a methylene spacer was treated with the iron(II) complex, only one isomer was obtained and identified as a binuclear heterochiral triple-stranded helicate [Fe2(14)3]" (5.16) (Scheme 5.7). Interestingly the H-NMR... 

Allylic ethers may react with 2,3-disubstituted 1,3-butadienes in an iron-catalyzed process in two different modes depending on the ligand (Scheme 4-312). A [4+4] ene reaction is favored when a bipyridine(diene)iron complex is used as catalyst to form the corresponding vinyl ethers. If l,2-bis(diphenylphosphano)ethane is used as ligand, a 1,4-hydrovinylation of the diene is observed. The active Fe(0) catalysts are synthesized from Fe(ll) or Fe(III) salts by reduction with Grignard or trialkylaluminum reagents. ... 

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