The complexes of dimethylcyclopentadienyl dichlorotitanium(Ⅳ)and salicytic acid,sulfhydryl salicylic acid,5-nitrosalicylic acid,3,5-dinitro salicylic acid have been prepared in aqueous-phase.The structures have been ...The complexes of dimethylcyclopentadienyl dichlorotitanium(Ⅳ)and salicytic acid,sulfhydryl salicylic acid,5-nitrosalicylic acid,3,5-dinitro salicylic acid have been prepared in aqueous-phase.The structures have been determined by elemental analysis,IR and 1HNMR spectra. It’s approved that (MeCp) 2TiCl 2-acetylacetone complex reacts with sodium of salicylic acid or substituted derivatives in aqueous-phase,and the results depend on the pH of salicylate solution,concentration and temperature.The best condition of the preparation of dimethylcyclopentadienyl salicylatotitanium(Ⅳ)complexes is that:the molar ration of (MeCp) 2TiCl 2 and substituted salicylic acid is 1:1;the pH being controlled in 6 0-7 5.The disalicylato derivatives of dimethylcyclopentadienyl titanium(Ⅳ)are whereby where by (MeCp) 2TiCl 2 and substituted salicylic acid are close in the molar ratio of 1 to 2,and the pH is 3.5-4.5.In all the preparations,the temperature is at 0℃ and the molar concentration of substituted salicylic acid is 0.04 mol/L.The mechanism of the reaction was also discussed.展开更多
文摘The complexes of dimethylcyclopentadienyl dichlorotitanium(Ⅳ)and salicytic acid,sulfhydryl salicylic acid,5-nitrosalicylic acid,3,5-dinitro salicylic acid have been prepared in aqueous-phase.The structures have been determined by elemental analysis,IR and 1HNMR spectra. It’s approved that (MeCp) 2TiCl 2-acetylacetone complex reacts with sodium of salicylic acid or substituted derivatives in aqueous-phase,and the results depend on the pH of salicylate solution,concentration and temperature.The best condition of the preparation of dimethylcyclopentadienyl salicylatotitanium(Ⅳ)complexes is that:the molar ration of (MeCp) 2TiCl 2 and substituted salicylic acid is 1:1;the pH being controlled in 6 0-7 5.The disalicylato derivatives of dimethylcyclopentadienyl titanium(Ⅳ)are whereby where by (MeCp) 2TiCl 2 and substituted salicylic acid are close in the molar ratio of 1 to 2,and the pH is 3.5-4.5.In all the preparations,the temperature is at 0℃ and the molar concentration of substituted salicylic acid is 0.04 mol/L.The mechanism of the reaction was also discussed.
