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Synthesis and characterization of two bis (η5-methylcyclopentadienyl)hydroxynaphthoatotitanium complexes

“…Both of the bis(5-methylcyclopentadienyl) titanium fragments have typically bent sandwich geometries and titanium atoms are in pseudotetrahedral environments. [7]. The crystal structure parameters of 1 and 2, and reported substituted salicylic titanocene complexes are shown in table 3.…”

“…Substituted salicylic acids possess antiinflammatory activity and are also of interest from a structural point of view, so synthesis of substituted salicylate methylcyclopentadienyl titanocene derivatives may develop new anticancer medicines with a synergistic effect or novel molecular structures of titanium aryloxides. There are very few structural characterizations of substituted salicylate titanocene complexes [6,7], and even few of aromatic acid methylcyclopentadienyl titanocene derivatives [8].…”

Mono- and di-anionic coordination modes of arylazosalicylates in their bis(η5-cyclopentadienyl)titanium(IV) complexes: Syntheses and crystal structures

“…Compound 2 was isolated in high yield (86%) from a reaction containing equivalent amounts of Cp 2 TiCl 2 , triethylamine and sodium salicylate (generated from NaOH and salicylic acid) in degassed water under stirring conditions for 10 min. The structure of 2 was determined from the results of single crystal X-ray crystallography that confirms the bidentate chelating nature of the doubly deprotonated salicylate ligand [51]. On the other hand, attempted preparations of pure 1 by reacting (i) sodium salicylate and Cp 2 TiCl 2 in two different solvents e.g.…”

“…were reinvestigated [51]. Compound 2 was isolated in high yield (86%) from a reaction containing equivalent amounts of Cp 2 TiCl 2 , triethylamine and sodium salicylate (generated from NaOH and salicylic acid) in degassed water under stirring conditions for 10 min.…”

“…On the other hand, attempted preparations of pure 1 by reacting (i) sodium salicylate and Cp 2 TiCl 2 in two different solvents e.g. toluene and water, (ii) salicylic acid and Cp 2 TiMe 2 in toluene and (iii) sodium salicylate and acetylacetone treated Cp 2 TiCl 2 in water [49] provided either a mixture of 1 and 2 or products could not be separated [51], underscoring the synthetic difficulties in this field.…”