Ball-and-Socket Stacking of Supercharged Geodesic Polyarenes: Bonding by Interstitial Lithium Ions
摘要:
Unprecedented supramolecular stacks of highly reduced geodesic pi-systems were prepared by the reduction of the derivatized fullerenes Me5C60H and Ph5C60H and corannulene with lithium metal (R5C605-/Cor(4-)/9Li(+)). The host-guest assemblies form because of the enhanced electrostatic interactions between the lithium cations and the anionic moieties, in addition to the structural compatibility between the curved hydrocarbons. The high stability of these new supramolecular assemblies (heterodimers) enables the introduction of another organization motif to the system. This is achieved by using tethered corannulenes as host molecules, which leads to the formation of tethered bis-heterodimers ((Me5C605-/Cor(4-))(2)(CH2)(8)/18Li(+)).
Ruthenium(II) Complexes of Pentamethylated [60]Fullerene. Alkyl, Alkynyl, Chloro, Isocyanide, and Phosphine Complexes
作者:Yutaka Matsuo、Eiichi Nakamura
DOI:10.1021/om0302387
日期:2003.6.1
A rutheniumchloro dicarbonyl complex bearing a pentamethylated [60]fullerene ligand, Ru(η5-C60Me5)Cl(CO)2 (1), was prepared by the reaction of [RuCl2(CO)3]2 with C60Me5K in THF. A variety of ligand exchange reactions involving the carbonyl and chloro ligands took place on the ruthenium metal attached directly to the exterior of the fullerene framework. Treatment of 1 with a phosphine ligand afforded
Synthesis and Derivatization of Iridium(I) and Iridium(III) Pentamethyl[60]fullerene Complexes
作者:Yutaka Matsuo、Akihiko Iwashita、Eiichi Nakamura
DOI:10.1021/om049333l
日期:2005.1.1
An iridium(I) pentamethyl[60]fullerene complex, Ir(η5-C60Me5)(CO)2 (1), was prepared by the reaction of K(C60Me5) with [IrCl(CO)2]2 in an acetonitrile/THF solution. Oxidation of the iridium atom of 1 by I2 successfully proceeded to afford an iridium(III) complex, Ir(η5-C60Me5)I2(CO) (2), in 80% yield. Ligand exchange reactions of 1 took place to give phosphine complexes, Ir(η5-C60Me5)(CO)(PEt3) (3b)
Coupling of Alkylarene and Pentamethyl[60]fullerene by Iridium-catalyzed Benzylic C–H Bond Activation
作者:Yutaka Matsuo、Akihiko Iwashita、Eiichi Nakamura
DOI:10.1246/cl.2006.858
日期:2006.8
Heating of C60Me5Br in toluene in the presence of an iridium catalyst and triethylamine results in benzylation of the fullerene core to yield C60Me5CH2C6H5. The reaction is general for various alkylarenes, and probably takes place via iridium-catalyzed activation of a benzylic C–H bond.
Synthesis of Functionalized Fullerene by Mono-alkylation of Fullerene Cyclopentadienide
作者:Ryo Hamasaki、Yutaka Matsuo、Eiichi Nakamura
DOI:10.1246/cl.2004.328
日期:2004.3
Mono-alkylation reaction of a fullerene cyclopentadienide with a functionalized alkyl halide quantitatively gave a functionalized [60]fullerenederivative that may bear a variety of functional groups and may exhibit high solubility in various solvents.
"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.