Issue 22, 2017

Photochemical reactions of metal complexes in the solid state

Abstract

This perspective focusses on the solid-state reactivity and structural transformation driven by photochemical methods in discrete metal complexes, organometallic compounds, metallo-macrocycles and cages. Changes in the metal–metal bond distances, racemization of chiral centres, fusion of cages, formation of coordination polymers, expected [2 + 2] and [4 + 4] cycloaddition products, unusual phenyl-olefin dimerization, and linkage isomerization of –SO2, –NO & –NO2 ligands cause the structural transformations. Of these, [2 + 2] photo-cycloaddition reactions have been widely studied and the photoreactions are made possible by various supramolecular interactions including hydrogen bonds, metallophilic, π⋯π and C–H⋯π interactions, ligand design and metallic clips to bring the reactive functional groups closely into correct orientation close to the transition state. These photoreactions are often accompanied by crystal bending, mechanical motion, and changes in the magnetic and photoluminescence properties. In several cases, the single crystals have been preserved at the end of the reactions, which are known as single-crystal-to-single-crystal (SCSC) reactions.

Graphical abstract: Photochemical reactions of metal complexes in the solid state

Article information

Article type
Perspective
Submitted
10 Mär 2017
Accepted
04 Mai 2017
First published
25 Mai 2017

Dalton Trans., 2017,46, 7120-7140

Photochemical reactions of metal complexes in the solid state

J. J. Vittal and H. S. Quah, Dalton Trans., 2017, 46, 7120 DOI: 10.1039/C7DT00873B

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