Novel hexanuclear and octanuclear zinc alkyl cages derived from a bis-oxamidate ligand

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• 作者：Ernesto Rufino-Felipe^a ; Judith Caballero-Jimé ; nez^a ; Luis-Guillermo Guerrero-Ramí ; rez^b ; Marcos Flores-Á ; lamo^c ; Miguel-Á ; ngel Muñ ; oz-Herná ; ndez^a ; ^{mamund2@uaem.mx" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Zn cages ; Coordination self-assembly ; Nuclearity control ; Zn catalysts ; ROP rac-lactide
• 刊名：Inorganic Chemistry Communications
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：63
• 期：Complete
• 页码：107-110
• 全文大小：410 K

文摘

1 and 2 were prepared by coordination self-assembly from reacting N,N′-bis(3,5-di-tert-buthyl-2-phenol)oxamide (L-H₄) with ZnEt₂ in toluene and THF, respectively. The molecular X-ray structures show 1 as an octanuclear Zn₈ cage and 2 as a hexanuclear Zn₆ cage. The nuclearity of these cages is driven by the solvent, in fact 1 gives 2 upon addition of THF. Good polymer conversions for the ROP of rac-lactide were achieved by using 1 and 2 with alcohols as co-catalysts.