氯化钽(V)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 6.85 g (181 mmol) of sodium borohydride and 40 ml of THF were added to a solution of 48.9 g (489 mmol) of ethylcyclopentadienyl lithium prepared from ethylcyclopentadiene and butyl lithium in THF (200 ml), followed by ice-cooling. 24.9 g (69 mmol) of tantalum pentachloride was added to the mixture, followed by refluxing for 4 hours. The solvent was distilled away in vacuo, and the residue was sublimated at 2.5 Pa/100° C. to obtain 8.80 g (yield: 34.2%) of a white solid. cooling by refluxing for 4 hours The solvent was distilled away in vacuo was sublimated at 2.5 Pa/100° C.

反应条件: temp:-70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 75.0 g (209 mmol) of tantalum pentachloride was suspended in 1,200 ml of ether, and 335 ml (228 mmol) of isopropyl magnesium bromide (0.68M THF solution) was added thereto. A solution of 41.9 g (419 mmol) of ethylcylopentadienyl lithium prepared from ethylcylopentadiene and butyl lithium in THF (240 ml) was added, followed by refluxing for 1 hour. The solvent was distilled away, and the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid containing bis(ethylcyclopentadienyl)dichlorotantalum (Ta(EtCp)2Cl2). 1,060 ml of toluene was added to this dark brown solid, and the resulting mixture was ice-cooled. 187 ml (623 mmol) of a toluene solution (65 wt %) of sodium bis(2-methoxyethoxy)aluminum hydride was added dropwise to the mixture, and temperature was returned to room temperature, followed by stirring for 17 hours. 107 ml of water was added to the mixture, followed by stirring until foaming does not occur. Insoluble contents were filtered out, and the solvent was distilled away from the filtrate. 590 ml of hexane was added to the residue, the insoluble contents were filtered out. When the filtrate was cooled to −70° C., a white solid was formed. The supernatant was removed, and the solid was washed with 24 ml of cold pentane two times to obtain a solid. The solid obtained was distilled in vacuo at 2.5 Pa/100° C. to obtain 7.79 g (yield: 10.1%) of a colorless liquid. When this liquid was cooled to room temperature, white crystals were formed. was added by refluxing for 1 hour The solvent was distilled away the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid cooled was returned to room temperature by stirring until foaming Insoluble contents were filtered out the solvent was distilled away from the filtrate 590 ml of hexane was added to the residue the insoluble contents were filtered out a white solid was formed The supernatant was removed the solid was washed with 24 ml of cold pentane two times to obtain a solid The solid obtained was distilled in vacuo at 2.5 Pa/100° C.

反应条件: temp:-70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 75.0 g (209 mmol) of tantalum pentachloride was suspended in 1,200 ml of ether, and 335 ml (228 mmol) of isopropyl magnesium bromide (0.68M THF solution) was added thereto. A solution of 41.9 g (419 mmol) of ethylcylopentadienyl lithium prepared from ethylcylopentadiene and butyl lithium in THF (240 ml) was added, followed by refluxing for 1 hour. The solvent was distilled away, and the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid containing bis(ethylcyclopentadienyl)dichlorotantalum (Ta(EtCp)2Cl2). 1,060 ml of toluene was added to this dark brown solid, and the resulting mixture was ice-cooled. 187 ml (623 mmol) of a toluene solution (65 wt %) of sodium bis(2-methoxyethoxy)aluminum hydride was added dropwise to the mixture, and temperature was returned to room temperature, followed by stirring for 17 hours. 107 ml of water was added to the mixture, followed by stirring until foaming does not occur. Insoluble contents were filtered out, and the solvent was distilled away from the filtrate. 590 ml of hexane was added to the residue, the insoluble contents were filtered out. When the filtrate was cooled to −70° C., a white solid was formed. The supernatant was removed, and the solid was washed with 24 ml of cold pentane two times to obtain a solid. The solid obtained was distilled in vacuo at 2.5 Pa/100° C. to obtain 7.79 g (yield: 10.1%) of a colorless liquid. When this liquid was cooled to room temperature, white crystals were formed. was added by refluxing for 1 hour The solvent was distilled away the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid cooled was returned to room temperature by stirring until foaming Insoluble contents were filtered out the solvent was distilled away from the filtrate 590 ml of hexane was added to the residue the insoluble contents were filtered out a white solid was formed The supernatant was removed the solid was washed with 24 ml of cold pentane two times to obtain a solid The solid obtained was distilled in vacuo at 2.5 Pa/100° C.

反应条件: temp:-70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 80.0 g (223 mmol) of tantalum pentachloride was suspended in 1,340 ml of ether, and 324 ml (220 mmol) of isopropyl magnesium bromide (0.68M THF solution) was added thereto. A solution of 50.2 g (440 mmol) of propylcyclopentadienyl lithium prepared from propylcylopentadiene and butyl lithium in THF (380 ml) was added, followed by refluxing for 1 hour. The solvent was distilled away, and the residue was dried at 80° C. in vacuo for 8 hours to obtain a brownish-red solid containing dichlorobis(propylcyclopentadienyl)tantalum (Ta (PrCp)2Cl2). 2,100 ml of toluene was added to this brownish-red solid, and the resulting mixture was ice-cooled. 198 ml (660 mmol) of a toluene solution (65 wt %) of sodium bis(2-methoxyethoxy)aluminum hydride was added dropwise to the mixture, and temperature was returned to room temperature, followed by stirring for 19.5 hours. 106 ml of water was added to the mixture, followed by stirring until foaming does not occur. Insoluble contents were filtered out, and the solvent was distilled away from the filtrate. 2,000 ml of hexane was added to the residue, the insoluble contents were filtered out, and the filtrate was concentrated to about 800 ml. When the concentrated liquid was cooled to −70° C., a white solid was formed. A supernatant was removed, and the solid was washed with 40 ml of cold pentane two times to obtain 11.2 g (yield: 12.8%) of a white solid. was added by refluxing for 1 hour The solvent was distilled away the residue was dried at 80° C. in vacuo for 8 hours to obtain a brownish-red solid cooled was returned to room temperature by stirring until foaming Insoluble contents were filtered out the solvent was distilled away from the filtrate 2,000 ml of hexane was added to the residue the insoluble contents were filtered out the filtrate was concentrated to about 800 ml a white solid was formed A supernatant was removed the solid was washed with 40 ml of cold pentane two times

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 6.85 g (181 mmol) of sodium borohydride and 40 ml of THF were added to a solution of 48.9 g (489 mmol) of ethylcyclopentadienyl lithium prepared from ethylcyclopentadiene and butyl lithium in THF (200 ml), followed by ice-cooling. 24.9 g (69 mmol) of tantalum pentachloride was added to the mixture, followed by refluxing for 4 hours. The solvent was distilled away in vacuo, and the residue was sublimated at 2.5 Pa/100° C. to obtain 8.80 g (yield: 34.2%) of a white solid. cooling by refluxing for 4 hours The solvent was distilled away in vacuo was sublimated at 2.5 Pa/100° C.

反应条件: temp:-70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 75.0 g (209 mmol) of tantalum pentachloride was suspended in 1,200 ml of ether, and 335 ml (228 mmol) of isopropyl magnesium bromide (0.68M THF solution) was added thereto. A solution of 41.9 g (419 mmol) of ethylcylopentadienyl lithium prepared from ethylcylopentadiene and butyl lithium in THF (240 ml) was added, followed by refluxing for 1 hour. The solvent was distilled away, and the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid containing bis(ethylcyclopentadienyl)dichlorotantalum (Ta(EtCp)2Cl2). 1,060 ml of toluene was added to this dark brown solid, and the resulting mixture was ice-cooled. 187 ml (623 mmol) of a toluene solution (65 wt %) of sodium bis(2-methoxyethoxy)aluminum hydride was added dropwise to the mixture, and temperature was returned to room temperature, followed by stirring for 17 hours. 107 ml of water was added to the mixture, followed by stirring until foaming does not occur. Insoluble contents were filtered out, and the solvent was distilled away from the filtrate. 590 ml of hexane was added to the residue, the insoluble contents were filtered out. When the filtrate was cooled to −70° C., a white solid was formed. The supernatant was removed, and the solid was washed with 24 ml of cold pentane two times to obtain a solid. The solid obtained was distilled in vacuo at 2.5 Pa/100° C. to obtain 7.79 g (yield: 10.1%) of a colorless liquid. When this liquid was cooled to room temperature, white crystals were formed. was added by refluxing for 1 hour The solvent was distilled away the residue was dried at 80° C. in vacuo for 8 hours to obtain a dark brown solid cooled was returned to room temperature by stirring until foaming Insoluble contents were filtered out the solvent was distilled away from the filtrate 590 ml of hexane was added to the residue the insoluble contents were filtered out a white solid was formed The supernatant was removed the solid was washed with 24 ml of cold pentane two times to obtain a solid The solid obtained was distilled in vacuo at 2.5 Pa/100° C.

反应条件: temp:-70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 80.0 g (223 mmol) of tantalum pentachloride was suspended in 1,340 ml of ether, and 324 ml (220 mmol) of isopropyl magnesium bromide (0.68M THF solution) was added thereto. A solution of 50.2 g (440 mmol) of propylcyclopentadienyl lithium prepared from propylcylopentadiene and butyl lithium in THF (380 ml) was added, followed by refluxing for 1 hour. The solvent was distilled away, and the residue was dried at 80° C. in vacuo for 8 hours to obtain a brownish-red solid containing dichlorobis(propylcyclopentadienyl)tantalum (Ta (PrCp)2Cl2). 2,100 ml of toluene was added to this brownish-red solid, and the resulting mixture was ice-cooled. 198 ml (660 mmol) of a toluene solution (65 wt %) of sodium bis(2-methoxyethoxy)aluminum hydride was added dropwise to the mixture, and temperature was returned to room temperature, followed by stirring for 19.5 hours. 106 ml of water was added to the mixture, followed by stirring until foaming does not occur. Insoluble contents were filtered out, and the solvent was distilled away from the filtrate. 2,000 ml of hexane was added to the residue, the insoluble contents were filtered out, and the filtrate was concentrated to about 800 ml. When the concentrated liquid was cooled to −70° C., a white solid was formed. A supernatant was removed, and the solid was washed with 40 ml of cold pentane two times to obtain 11.2 g (yield: 12.8%) of a white solid. was added by refluxing for 1 hour The solvent was distilled away the residue was dried at 80° C. in vacuo for 8 hours to obtain a brownish-red solid cooled was returned to room temperature by stirring until foaming Insoluble contents were filtered out the solvent was distilled away from the filtrate 2,000 ml of hexane was added to the residue the insoluble contents were filtered out the filtrate was concentrated to about 800 ml a white solid was formed A supernatant was removed the solid was washed with 40 ml of cold pentane two times