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  • Title: Core/shell oligometallic template synthesis of macrocyclic hexaoxime.
    Author: Akine S, Sunaga S, Taniguchi T, Miyazaki H, Nabeshima T.
    Journal: Inorg Chem; 2007 Apr 16; 46(8):2959-61. PubMed ID: 17361999.
    Abstract:
    A 36-membered macrocyclic hexaoxime was quantitatively obtained by [3 + 3] condensation of dialdehyde 2 with diamine 3 using La3+ (core metal) and Zn2+ (shell metal) as a novel core/shell template, while the yield was very low in the absence of the metal ions. The high yield can be attributed to the efficient formation of a 3:3:1 complex of dialdehyde 2, Zn2+, and La3+, which readily gives the macrocycle keeping the Zn3La core/shell tetranuclear cluster structure.
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