Themed collection Spotlight Collection: Metallocycles and Metallocages

13 items
Communication

A discrete Cu2(Pd-bpy)2L2 heterometallic compound with superoxide dismutase enzyme like activity

An aqueous soluble discrete heterometallic compound consisting of Cu(II) and Pd(II) units with SOD mimicking activity has been demonstrated.

Graphical abstract: A discrete Cu2(Pd-bpy)2L2 heterometallic compound with superoxide dismutase enzyme like activity
Communication

Self-assembly of mixed-valence and heterometallic metallocycles: efficient catalysts for the oxidation of alcohols to aldehydes in ambient air

Two mixed-valence CuII/CuI and two heterometallic CuII/AgI metallocycles have been synthesized by the assembly of designed metalloligands and CuI/AgI ions, respectively.

Graphical abstract: Self-assembly of mixed-valence and heterometallic metallocycles: efficient catalysts for the oxidation of alcohols to aldehydes in ambient air
Communication

A tri-metallic palladium complex with breast cancer stem cell potency

A multi-nuclear, triangular-shaped palladium(II) complex is shown to equipotently kill bulk cancer cells and cancer stem cells (CSCs) in the micromolar range.

Graphical abstract: A tri-metallic palladium complex with breast cancer stem cell potency
Communication

A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ cage

A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ tetrahedral cage is reported.

Graphical abstract: A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ cage
Communication

Strongly luminescent 5d/4f heterometal–organic macrocycles with open metal sites: post-assembly modification and sensing

Strongly luminescent 5d/4f heterometal–organic macrocycles featuring open metal sites have been constructed, along with their post-assembly modification and sensing properties.

Graphical abstract: Strongly luminescent 5d/4f heterometal–organic macrocycles with open metal sites: post-assembly modification and sensing
Paper

Coordination-driven self-assembly of anthraquinone-based metal–organic cages for photocatalytic selective [2 + 2] cycloaddition

Guided by the coordination-driven self-assembly, four metal–organic cages (MOCs) with D2 or D4h symmetry are synthesized and can be efficient catalysts for photocatalytic [2 + 2] cycloaddition reaction.

Graphical abstract: Coordination-driven self-assembly of anthraquinone-based metal–organic cages for photocatalytic selective [2 + 2] cycloaddition
Paper

Coordination-driven discrete metallo-supramolecular assembly for rapid and selective photochemical CO2 reduction in aqueous solution

A discrete metallo-supramolecular assembly bearing six iron(II) centers and twelve terpyridine fragments has been developed for highly efficient and selective photochemical CO2 reduction with an organic TADF photosensitizer.

Graphical abstract: Coordination-driven discrete metallo-supramolecular assembly for rapid and selective photochemical CO2 reduction in aqueous solution
Paper

Preparation of a magnetic metal–organic square and metal–organic cubes using 4,5-bis(2-imidazolinyl)imidazolate: slow magnetization relaxation behavior in mixed-valent octamanganese(II/III) clusters

Functional metal–organic squares (MOSs) and metal–organic cubes (MOCs) are important building units for zeolite-like metal–organic frameworks (ZMOFs), which are required to exhibit solid-state properties, such as dielectric and magnetic properties.

Graphical abstract: Preparation of a magnetic metal–organic square and metal–organic cubes using 4,5-bis(2-imidazolinyl)imidazolate: slow magnetization relaxation behavior in mixed-valent octamanganese(ii/iii) clusters
Paper

A green separation process of Ag via a Ti4(embonate)6 cage

A green supramolecular recovery process of Ag has been developed by using a highly charged anionic Ti4L6 (L = embonate) cage as the extractant.

Graphical abstract: A green separation process of Ag via a Ti4(embonate)6 cage
Paper

Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions

A system of a Pd2L4 coordination cage was constructed, and the cage is an efficient gauge for the recognition of ubiquitous polyatomic anions.

Graphical abstract: Flexibility and anion exchange of [(X)@Pd2L4] cages for recognition of size and charge of polyatomic anions
Open Access Paper

Substrate and product binding inside a stimuli-responsive coordination cage acting as a singlet oxygen photosensitizer

Multiple functionalities of an acridone-based metallosupramolecular assembly: photosensitization of singlet oxygen, allosteric activation as host and encapsulation of the substrate and product of a hetero-Diels-Alder reaction.

Graphical abstract: Substrate and product binding inside a stimuli-responsive coordination cage acting as a singlet oxygen photosensitizer
Paper

On/off fluorescence emission induced by encapsulation, exchange and reversible encapsulation of a BODIPY-guest in self-assembled organometallic cages

A reversible fluorescence turn off/on switch induced by the encapsulation and release of a guest molecule within an organometallic cage was presented.

Graphical abstract: On/off fluorescence emission induced by encapsulation, exchange and reversible encapsulation of a BODIPY-guest in self-assembled organometallic cages
Paper

Self-assembly processes of octahedron-shaped Pd6L12 cages

Self-assembly processes of three octahedron-shaped [Pd6L12]12+ cages were investigated by an NMR-based quantitative approach (QASAP).

Graphical abstract: Self-assembly processes of octahedron-shaped Pd6L12 cages
13 items

About this collection

Metallocycles and Metallocages are discrete, 2D and 3D metal-organic architectures. These beautiful and often complex structures can be formed from relatively simple building blocks through self-assembly processes centred around transition metal and lanthanide coordination chemistry. The diversity of accessible topologies and sizes, combined with their well-defined cavities, make them fascinating synthetic targets and attractive hosts in supramolecular chemistry. This Spotlight Collection aims to celebrate recent developments in the field, highlighting both fundamental and applied research.

Fundamental research into the construction and structural interconversion of new cages and metallocycles remains a valuable and popular research topic, while new and varied applications of these structures continue to develop and expand. Examples found within this collection include studies of spin and magnetism, hierarchical self-assembly into gels and applications in catalysis, separations, cancer therapeutics and optical detection.

This collection is guest edited by Dalton Transactions Advisory Board member Prof. Lin Xu (East China Normal University), alongside Dr Cally Haynes (University College London) and Dr James Lewis (Imperial College London).

Articles will be added to this themed collection as soon as possible after they are published. Please return to this page frequently to see the collection grow.

If you would like to contribute an article to this collection, please contact the Editorial Office at dalton-rsc@rsc.org with your proposed topic.

Spotlight

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