Halide and complex halogeno anions as salts of oxinate chelates of titanium(IV) |
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Authors: | GS Sodhi AK Sharma NK Kaushik |
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Institution: | Department of Chemistry, University of Delhi, Delhi India |
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Abstract: | (η5-Cyclopentadienyl)(η5-pyrrolyl)titanium(IV) dichloride, (η5-indenyl)-(η5-pyrrolyl)titanium(IV) dichloride and (η5-cyclopentadienyl)(η5-indenyl)-titanium(IV) dichloride, when treated with 8-hydroxyquinoline (oxine) in aqueous medium form ionic derivatives of the type, (η5-R)(η5-R′)TiL]+ Cl- (R = C5H5, C9H7, R′ = C4H4N; R = C5H5, R′ = C9H7; L is the conjugate base of (oxine). A number of halide and complex halogeno anions present in aqueous solution were isolated as salts of these ionic complexes giving derivatives of the type, (η5-R)(η5-R′)TiL]+ X- (X = Br-, I-, ZnCl3(H2O)-, CdCl42-, HgCl3-). Conductivity measurements in nitrobenzene solution indicate that these complexes are electrolytes. Both the IR and 1H NMR spectral studies demonstrate that the ligand L is chelating. Consequently there is tetrahedral coordination about the titanium(IV) ion. |
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Keywords: | Author for correspondence |
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