557099-95-3Relevant academic research and scientific papers
Ruthenium(II) complexes of pentamethylated [60]fullerene, alkyl, alkynyl, chloro, isocyanide, and phosphine complexes
Matsuo, Yutaka,Nakamura, Eiichi
, p. 2554 - 2563 (2003)
A ruthenium chloro 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 C60 Me5K 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 phosphine complexes, Ru(η5-C60 Me5)Cl(PEt3)(CO) (2) and Ru(η5-C60Me5)Cl(PPh3)(CO) (3). Isocyanide complexes, Ru(η5-C60Me5) Cl(tBuNC)(CO) (4), Ru(η5-C60Me5) Cl(MeNC)(CO) (5), and Ru(η5-C60Me5) Cl(XylNC)(CO) (6; Xyl = 2,6-dimethylphenyl), were also prepared by reaction with an appropriate isocyanide ligand, while the use of a large excess of the same isocyanides gave bis(isocyanide)complexes, Ru(η5-C60 Me5)Cl(tBuNC)2 (7) and Ru(η5-C60Me5)Cl(XylNC)2. (8) Metathetic replacement of the halogen atom on the transition-metal fullerene complexes was achieved: methyl and (trimethylsilyl)methyl Grignard reagents reacted with 1 to give a methyl complex, Ru(η5-C60Me5)Me(CO)2 (9), and a (trimethylsilyl)methyl complex, Ru(η5-C60 Me5)(CH2SiMe3)(CO)2 (10), respectively. Alkynylation reactions gave various alkynyl complexes, Ru(η5-C60Me5)(C≡CPh)(CO)2 (12), Ru(η5-C60Me5) (C≡CnBu)(CO)2 (13), Ru(η5-C60Me5)(C≡CSiMe3) (CO)2 (14), and Ru(η5-C60Me5) (C≡CH)(CO)2 (15). X-ray single-crystal structure analyses and electrochemical studies of a series of new ruthenium fullerene complexes were performed.
