Iron compounds metal-organic framework

Cyclooctatetraenyl complexes in which the metal is attached to the organic ring framework via a a bond to carbon are rare. The racemic iron compound 104 has been prepared, and its diastereoisomeric phosphine derivatives 105 (only one diastereoisomer shown) have been synthesized by photochemical replacement of a CO ligand in 104 by PR3 (180). Compound 104 exists as two... 

Bis(cyclopentadienyl)iron derivatives, ferrocenes, are remarkably stable against heat and air and undergo various kinds of chemical reactions. They are usually prepared by the reaction of FeCh with an alkali metal salt of cyclopentadienyl or cyclopentadiene in the presence of base [51]. Although ferrocene derivatives basically have chemical reactivities similar to those of aromatic compounds, they have found only limited applications to organic synthesis so far. However, because chiral ferrocenylphosphines are capable of having both planar chirality and an asymmetry in the side chain in their rigid framework, they have been used recently in a number of asymmetric reactions. In this section, synthesis and developments of monocyclopentadienyl complexes and ferrocenylphosphines are described. The general chemistry of ferrocenes and half metallocene complexes is reviewed elsewhere [52-53]. 

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