A kind of catalyst composition and its application
A composition and compound technology, applied in physical/chemical process catalysts, chemical/physical process, organic compound/hydride/coordination complex catalysts, etc., can solve unseen problems
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Embodiment 1
[0064] Example 1 {L 1 Eu[N(SiMe 3 ) 2 ]·THF} 2 preparation of
[0065] In an anhydrous, oxygen-free, argon-protected reaction flask, add Eu[N(SiMe 3 ) 2 ] 2 , dissolved in tetrahydrofuran; in another anhydrous, oxygen-free, argon-protected reaction flask, weigh and Eu[N(SiMe 3 ) 2 ] 2 Equimolar ratio of ligand L 1 H, add tetrahydrofuran, slowly add the ligand solution to Eu[N(SiMe 3 ) 2 ] 2 In the clear solution of ether solvent, react for 4h, and finally obtain the clear solution.
[0066] After the reaction, drain the solvent, wash with n-hexane, then add tetrahydrofuran until completely dissolved, centrifuge, take the supernatant into a crystallization bottle, drain the solvent, dissolve with an appropriate amount of tetrahydrofuran-n-hexane, and stand at room temperature until crystals are precipitated , that is, amido divalent rare earth amides {L 1 Eu[N(SiMe 3 ) 2 ]·THF} 2 , the yield was 75%.
[0067] {L 1 Eu[N(SiMe 3 ) 2 ]·THF} 2 See Table 1 for...
Embodiment 2
[0074] Example 2 {L 2 Yb[N(SiMe 3 ) 2 ]·THF} 2 preparation of
[0075] Add Yb[N(SiMe 3 ) 2 ] 2 , dissolved in tetrahydrofuran; weighed and Yb[N(SiMe 3 ) 2 ] 2 Equimolar ratio of ligand L 2 H, add tetrahydrofuran, slowly add the ligand solution to Yb[N(SiMe 3 ) 2 ] 2 In the clear solution of ether solvent, react for 4h, and finally obtain the clear solution.
[0076] After the reaction, drain the solvent, wash with n-hexane, then add tetrahydrofuran until completely dissolved, centrifuge, take the supernatant into a crystallization bottle, drain the solvent, dissolve with an appropriate amount of tetrahydrofuran-n-hexane, and stand at room temperature until crystals are precipitated , that is, amido divalent rare earth amides {L 2 Yb[N(SiMe 3 ) 2 ]·THF} 2 , the yield was 82%.
Embodiment 3
[0077] Example 3 {L 2 Eu[N(SiMe 3 ) 2 ]·THF} 2 preparation of
[0078] In an anhydrous, oxygen-free, argon-protected reaction flask, add Eu[N(SiMe 3 ) 2 ] 2 , dissolved in tetrahydrofuran; in another anhydrous, oxygen-free, argon-protected reaction flask, weigh the Eu[N(SiMe 3 ) 2 ] 2 Equimolar ratio of ligand L 2 H, add tetrahydrofuran, slowly add the ligand solution to Eu[N(SiMe 3 ) 2 ] 2 In the clear liquid of ether solvent, the clear liquid was finally obtained after reacting for 4 hours.
[0079] After the reaction, drain the solvent, wash with n-hexane, then add tetrahydrofuran until completely dissolved, centrifuge, take the supernatant into a crystallization bottle, drain the solvent, dissolve with an appropriate amount of tetrahydrofuran-n-hexane, and stand at room temperature until crystals are precipitated , that is, amido divalent rare earth amides {L 2 Eu[N(SiMe 3 ) 2 ]·THF} 2 , the yield was 78%.
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