Abstract
Two novel iron and vanadium compounds, [OCMeCHCMeNAr] 2Fe ( 1) and [OCMeCHCMeNAr] 2VCl ( 2) have been synthesized by the reaction of FeCl 2 with Li[OCMeCHCMeNAr] in THF and VCl 3(THF) 3 with OCMeCHCMeNHAr, in toluene and triethylamine, respectively, where Ar = 2,6-diisopropylphenyl. Both the complexes have been systematically characterized by elemental analysis, NMR spectroscopy and exhibit paramagnetically shifted resonances, with relative intensities as expected for the η 2-ketiminate ligands. Single crystal X-ray structural analysis reveals that compound 1 adopts a distorted tetrahedral geometry consisting with a C 2 symmetry where as in 2, the geometry around the vanadium atom can be described as a trigonal bipyramid. Concerning the atom-transfer radical polymerization behavior, complex 1 and 2 shows their catalytic activity on polymerization of methyl methacrylate (MMA) in toluene.
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