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Guest‐Induced Transformation of a Porphyrin‐Edged Fe II 4 L 6 Capsule into a Cu I Fe II 2 L 4 Fullerene Receptor
Author(s) -
Wood Daniel M.,
Meng Wenjing,
Ronson Tanya K.,
Stefankiewicz Artur R.,
Sanders Jeremy K. M.,
Nitschke Jonathan R.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411985
Subject(s) - porphyrin , crystallography , chemistry , ligand (biochemistry) , fullerene , metal , adduct , nickel , degree of unsaturation , stereochemistry , photochemistry , polymer chemistry , organic chemistry , biochemistry , receptor
Abstract The combination of a bent diamino(nickel(II) porphyrin) with 2‐formylpyridine and Fe II yielded an Fe II 4 L 6 cage. Upon treatment with the fullerenes C 60 or C 70 , this cage was found to transform into a new host–guest complex incorporating three Fe II centers and four porphyrin ligands, in an arrangement that is hypothesized to maximize π interactions between the porphyrin units of the host and the fullerene guest bound within its central cavity. The new complex shows coordinative unsaturation at one of the Fe II centers as the result of the incommensurate metal‐to‐ligand ratio, which enabled the preparation of a heterometallic cone‐shaped Cu I Fe II 2 L 4 adduct of C 60 or C 70 .