Fullerene Reactivity – Fullerene Cations and Open‐Cage Fullerenes

Methane in an Open-Cage [60]Fullerene

“…1,2 The closing of the opening, after putting a chemical species inside, gives an endohedral fullerene compound. 3 Pure H 2 @C 60 was recently synthesized using this strategy 4,5 in sufficient amounts to be used for a variety of fundamental studies.…”

“…Among the many chemical modifications of fullerenes, carbon−carbon bond cleavage reactions are important because they result in the formation of “open-cage fullerenes,” which can allow atoms and small molecules into the inner sphere of fullerenes. , The closing of the opening, after putting a chemical species inside, gives an endohedral fullerene compound . Pure H 2 @C 60 was recently synthesized using this strategy , in sufficient amounts to be used for a variety of fundamental studies. − …”

New π‐Extended 1,1′‐Disubstituted Ferrocenes with Thioate and Dithioate End Groups

“…Expanded π systems deserve interest in the context of aromaticity, photophysical properties, molecular electronics, electronic organic materials such as conducting polymers, organic magnetic materials or nonlinear optics, and a number of other fields. [1][2][3] Although spherical structures such as curved or twisted polycyclic aromatic hydrocarbons and also fullerenes are actively being investigated, [4][5][6][7][8] most of the extended π systems consist of six-membered rings and are more or less planar. Ferrocene is a three-dimensional electron-rich organometallic aromatic compound, which was discovered almost 70 years ago.…”

Kinetics and Solvent-Dependent Thermodynamics of Water Capture by a Fullerene-Based Hydrophobic Nanocavity

“…Modulating the solvent parameters was expected to show some effects on the equilibrium and kinetics. It is worthy to note that, because of limited solubility of fullerenes, solvents chosen for a fullerene derivative are generally hydrophobic as well as the interior of a fullerene cage. − …”

“…To access the closed interior of a fullerene, carbon−carbon bonds of the ‘cage’ must be cleaved by organic reactions designed to afford either resealable or permanent openings. Openings of this size permit the insertion of noble gas atoms (He, Ne, Ar, and Kr) and small molecules (H 2 , N 2 , CO, H 2 O, NH 3 , and CH 4 ) inside the host. − Generally, high temperatures and pressures are employed for insertion, so that the guest remains inside once ambient conditions are returned. Fullerenes with larger openings, like compound 1 (Figure ), have also been shown to spontaneously encapsulate a single H 2 O from organic solution .…”