Solvent‐Dependent Host–Guest Chemistry of an Fe₈L₁₂ Cubic Capsule

Abstract

This work was supported by the DYNAMOL initial training network and the Marie Curie IIF Scheme of the 7th EU Framework Program. We thank the EPSRC Mass Spectrometry Service at Swansea for MALDI-TOF MS experiments and Dr. Boris Breiner for running ESI MS experiments. We thank Diamond Light Source (UK) for synchrotron beam time on I19 (MT7114).

Direct Measurement of Electron Transfer in Nanoscale Host–Guest Systems: Metallocenes in Carbon Nanotubes

“…Upon encapsulation in nanotubes (Figure ) by a previously reported gas‐phase method, the redox potential ( E 1/2 ) of the Fe III /Fe II couple of [Fe(Cp) 2 ] is observed to shift by +0.04 V compared to the same measurement performed for [Fe(Cp) 2 ] in solution, outside nanotubes (Figure ). Such a small but measurable shift of the Fe III /Fe II couple was previously observed in other nanocontainers with a positive charge, and can be attributed to a decrease in electron density on the iron centre of [Fe(Cp) 2 ] compared to the solution CV. The HOMO of [Fe(Cp) 2 ] is below the Fermi level of the pristine nanotubes, which means that theoretically no spontaneous electron transfer can occur (Figure b).…”

Encapsulated Cobalt–Porphyrin as a Catalyst for Size‐Selective Radical‐type Cyclopropanation Reactions

“…We started our investigations by improving the solubility of cage 1 , aiming for a cage that is soluble in different organic solvents or solvent mixtures. Because modification of the aldehyde or porphyrin structure might interfere with the cage formation, we decided to manipulate the counterion 12. Replacing Fe(OTf) 2 with Fe(NTf 2 ) 2 resulted in cage compound 3 in 97 % yield (see the Supporting Information for characterization).…”

Host–Guest and Photophysical Behavior of Ti8L12 Cube with Encapsulated [Ti(H2O)6] Species

“…Its molecular structure is featured by ac ubic arrangement with the Ti atoms situateda tt he 8v ertices and Ll igands defining the 12 edges ( Figure 1a). Although many coordination cubes based on transition metal and lanthanide ions have been reported, [35][36][37][38] to the best of our knowledge,t he Ti 8 L 12 in PTC-97 is the first cubic Ti-organic cage. All the Ti atoms are located at an octahedral coordination environmentc omprisingo f three phenol oxygen atoms and three carboxylate oxygen atoms from three different Ll igands;e ach Ll igand bridges two Ti atoms in as ymmetric form.…”