Linking heterometallic rings for quantum information processing and amusement.
Linking polymetallic cages can be a method for creating new structures and new properties. In this tutorial review we use heterometallic anti-ferromagnetically coupled rings (AF-rings) as exemplars for three approaches that can be used to link cage compounds. The first of three routes involves an ion-pair interaction supported by hydrogen-bonding interactions, which allows the synthesis of hybrid rotaxanes among other materials. The second route involves functionalising the exterior of the AF-ring so that it will act as a Lewis base; complexes involving coordination of pyridine to bridging monometallic and dimetallic fragments are discussed. The third route involves creating a vacancy on one site of the AF-ring, and then using the ring as a Lewis acid. Di-imine ligands can then be used to link the AF-rings into dimers. A brief discussion of the physical properties of these systems is also included.
The Lewis Magnetism Laboratory, School of Chemistry, The University of Manchester, Manchester, UK. grigore.timco@manchester.ac.uk
Grigore A
GA
Timco
Thomas B
TB
Faust
Floriana
F
Tuna
Richard E P
RE
Winpenny