Hybrid of Ferrocene and Fullerene

Abstract

"Bucky ferrocenes", molecular hybrids of ferrocene and fullerene, have been synthesized in good yield on gram scale by treatment of C(60)HMe(5) or C(70)HMe(3) with [FeCp(CO)(2)](2) and their structures studied with physical methods including X-ray crystallography.

Bucky ferrocene. Hybrid of ferrocene and fullerene

“…When 9 and FeBrCp(CO) 2 were heated in 1,2-dichlorobenzene at 120 °C for 24 h, Fe(MeFCp)Cp (10) was obtained in 10 % yield as an orange solid [15]. Whereas recent theo- retical studies have suggested that bucky ferrocene would be thermodynamically rather unstable [3], 10 was in fact extremely stable: No decomposition took place after standing for many months in air, after heating at 200 °C for 1 h in vacuo, or after irradiation in benzene with a high-pressure mercury lamp under nitrogen for 15 h.…”

Structures and magnetic properties of iron chains encapsulated in tubal carbon nanocapsules

“…There have been some experimental studies about SWNTs or multiwall nanotubes filling with TM atoms. [6][7][8][9][10][11] However, only a few theoretical works [12][13][14][15] related to SWNTs or SWNCs with TM atoms have been reported although extensive studies have been performed on the interactions between TM atoms and graphite or graphene [16][17][18][19] where no curvature or pentagonal ring exists, unlike in nanotube or nanocapsules. A complete understanding of the magnetism of TM particles in SWNTs and SWNCs or interaction between them still remains a challenging problem.…”

Rhenium‐Templated Regioselective Polyhydrogenation Reaction of [60]Fullerene

“…In contrast to the known polyhydrogenation reactions that invariably produce mixtures of products, [5,18] the control of both the regioselectivity and the numbers of hydrogen atoms is remarkably high. The h 5 -structures of the metal complexes [7,11] reported herein are the first examples of such hydrofullerenes. The similarity of the regioselectivity of the formation of 4, 6, 8, and 9 to that of the regioselective polyalkylation reported previously [2b, 19] suggests certain mechanistic kinship among these reactions, for example, an electron-transfer mechanism.…”

“…[7] Upon heating of 2 with [{(h- In the 13 C NMR spectrum the signals of the two carbon atoms attached to these protons (both at d = 44.35 ppm) show the same 1 J CH value of 145 Hz, which indicates 29 % s character [8] (that is sp 2.4 ) of these "sp 3 " carbon atoms. [9] Unambiguous structure determination of 4 was by X-ray crystallographic analysis of a single crystal (Figure 1), obtained by slow diffusion of hexane to a CS 2 solution of 4.…”

“…[7,11] The geometry around the rhenium center is similar to that of [(h-C 5 H 5 )Re(CO) 3 ], [12] as the three phenyl rings bound to the fullerene core in 4 point away from the metal center to minimize steric interaction with the carbonyl ligands.…”