(R)-Binaphthoxy diiodide lanthanides |
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Authors: | Nicolas Giuseppone Jacqueline Collin Angela Domingos Isabel Santos |
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Institution: | a Laboratoire de Catalyse Moléculaire, UPRESA 8075, ICMO, Université Paris-sud, F-91405 Orsay, France b Departamento de Quimica, ITN, 2688 Sacavém Codex, Portugal |
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Abstract: | The synthesis and characterization of novel enantiopure binaphthoxy-diiodo lanthanides (R)-2-(1-naphthol)-1′-naphthoxide)LnI2(THF)3] (Ln=Sm (4a), Yb (4b), La (4c)) are described. These complexes have been prepared by reacting the mono potassium salt of (R)-binaphthol with the corresponding lanthanide triiodides and were characterized by elemental analysis, IR and NMR spectroscopies. Recrystallization of 4c from THF–hexane led to monocrystals of (R)-2-(1-naphthol)-1′-naphthoxide)]-diiodolanthane-tetrakistetrahydrofurane] (4c*). Complex 4c* crystallizes in the orthorhombic space group, P212121 with cell parameters a=13.086(1) Å, b=15.496(1) Å, c=18.854(1) Å, V=3823.2(6) Å3, and Z=4. |
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Keywords: | Lanthanides Alkoxides Chirality Binaphthol |
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