Seventy organic compounds including various organophosphorus esters, amines and oxygen-based ligands were investigated as extractants. The experiment results show that amines are excellent extractants for W and Mo. Th...Seventy organic compounds including various organophosphorus esters, amines and oxygen-based ligands were investigated as extractants. The experiment results show that amines are excellent extractants for W and Mo. Their sequence of extraction ability for W is as follows: quarternary amine > tertiary amine > secondary amine > primary amine. Acidic organophosphorus extractants do not extract W, but can extract Mo with high extraction ability from the acidic solution. These extractants could provide a potential process for separating W from Mo.展开更多
Reaction of anhydrous YbCl3 with 1 equiv. of LLi [L=p-ClPhNC(Me)CH(Me)N(C6H3-2,6-i-Pr2)] in THF at room temperature gave the b-diketiminate lanthanide dichloride LYbCl2(THF)2 (1) in good isolated yield. Similarly reac...Reaction of anhydrous YbCl3 with 1 equiv. of LLi [L=p-ClPhNC(Me)CH(Me)N(C6H3-2,6-i-Pr2)] in THF at room temperature gave the b-diketiminate lanthanide dichloride LYbCl2(THF)2 (1) in good isolated yield. Similarly reaction of anhydrous YbCl3 with 1 equiv. of LLi, then with 1 equiv. of t-BuCpNa in THF yielded the expected mixed-ligand b-diketiminate ytterbium chloride (t-BuCp)YbL(m-Cl)2Li(THF)2 (2). Both 1 and 2 were well charac-terized by elemental analysis, IR spectra, 1H NMR spectra, and X-ray diffraction analysis.展开更多
文摘Seventy organic compounds including various organophosphorus esters, amines and oxygen-based ligands were investigated as extractants. The experiment results show that amines are excellent extractants for W and Mo. Their sequence of extraction ability for W is as follows: quarternary amine > tertiary amine > secondary amine > primary amine. Acidic organophosphorus extractants do not extract W, but can extract Mo with high extraction ability from the acidic solution. These extractants could provide a potential process for separating W from Mo.
基金Project supported by the National Natural Science Foundation of China (No. 20272040) and Ningbo Science and Technology Bureau.
文摘Reaction of anhydrous YbCl3 with 1 equiv. of LLi [L=p-ClPhNC(Me)CH(Me)N(C6H3-2,6-i-Pr2)] in THF at room temperature gave the b-diketiminate lanthanide dichloride LYbCl2(THF)2 (1) in good isolated yield. Similarly reaction of anhydrous YbCl3 with 1 equiv. of LLi, then with 1 equiv. of t-BuCpNa in THF yielded the expected mixed-ligand b-diketiminate ytterbium chloride (t-BuCp)YbL(m-Cl)2Li(THF)2 (2). Both 1 and 2 were well charac-terized by elemental analysis, IR spectra, 1H NMR spectra, and X-ray diffraction analysis.
