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J. Chem. Soc., Dalton Trans., 2002, 555 - 560, DOI: 10.1039/b107066p
Formation of 1
1 complexes of ferrocene-containing salen ligands with Mg, Ti and ZrAlexandr Shafir, Dorothea Fiedler and John Arnold
Condensation of 1,1
-diaminoferrocene with a range of salicylaldehydes resulted in the formation of the corresponding salen-type ligands in high yields. The ability of these compounds to serve as ligands was demonstrated by the formation of several 1 
1 Zr and Ti complexes, one of which was structurally characterized and was found to feature a t-BuSalfen2– ligand in a square-planar conformation. In addition, a related Schiff-base ligand was synthesized by condensing diaminoferrocene with 2,4-petanedione and a Zr complex of this ligand was isolated.
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