title: Guest-induced transformation of a porphyrin-edged Fe(II)4L6 capsule into a Cu(I)Fe(II)2L4 fullerene receptor.
abstract: The combination of a bent diamino(nickel(II) porphyrin) with 2-formylpyridine and Fe(II) yielded an Fe(II) 4 L6 cage. Upon treatment with the fullerenes C60 or C70 , 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 L4 adduct of C60 or C70 .
authors: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW (UK).
authors: Daniel M
authors: DM
authors: Wood
authors: Wenjing
authors: W
authors: Meng
authors: Tanya K
authors: TK
authors: Ronson
authors: Artur R
authors: AR
authors: Stefankiewicz
authors: Jeremy K M
authors: JK
authors: Sanders
authors: Jonathan R
authors: JR
authors: Nitschke
keywords: coordination chemistry; host-guest chemistry; metal-organic assemblies; self-assembly; supramolecular chemistry