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Keywords = Lu3N@Ih-C80

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9 pages, 2817 KB  
Article
Lu-Lu Bond in Lu2@C60 Metallofullerenes
by Yaoxiao Zhao, Wangqiang Shen, Weixing Chen and Xing Lu
Inorganics 2023, 11(7), 277; https://doi.org/10.3390/inorganics11070277 - 28 Jun 2023
Cited by 2 | Viewed by 2075
Abstract
This study on Lu2@C60 isomers provides insights into the metal–metal bond through the confinement effect of fullerene cages. Density functional theory calculations were used to study the nature of the Lu-Lu bond in two stable endohedral metallofullerenes (EMFs), Lu2 [...] Read more.
This study on Lu2@C60 isomers provides insights into the metal–metal bond through the confinement effect of fullerene cages. Density functional theory calculations were used to study the nature of the Lu-Lu bond in two stable endohedral metallofullerenes (EMFs), Lu2@C2v_C60 and Lu2@Ih_C60, both with negative endohedral energy. These two isomers are geometrically connected through a simple Stone–Wales (SW) transformation. The electronic configuration of (Lu2)4+@C604− was also confirmed, leading to the formation of a two-center two-electron (2c–2e) Lu-Lu σ single bond. By comparing the Lu-Lu bonds in Lu2@C60 with those in acknowledged Lu2@C2n, the smaller C60 fullerene compressed the geometry of Lu2 resulting in a much shorter Lu-Lu bond length. However, the Lu-Lu bond strength is slightly weaker in Lu2@C60 than that in large fullerenes, as the Lu-Lu bond in C60 is likely a p-p σ bond with an above the 40% contribution of p orbital and a strong metal–cage interaction. Additionally, the vis-NIR spectra of Lu2@C2v_C60 and Lu2@Ih_C60 were simulated, which could provide valuable information for future experimental studies on Lu-based EMFs. Full article
(This article belongs to the Special Issue Research on Metallofullerenes)
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10 pages, 1027 KB  
Article
Photoreactions of Endohedral Metallofullerene with Siliranes: Electronic Properties of Carbosilylated Lu3N@Ih-C80
by Masahiro Kako, Kazuya Minami, Taiki Kuroiwa, Shinpei Fukazawa, Yuki Arikawa, Michio Yamada, Yutaka Maeda, Qiao-Zhi Li, Shigeru Nagase and Takeshi Akasaka
Molecules 2017, 22(5), 850; https://doi.org/10.3390/molecules22050850 - 20 May 2017
Cited by 3 | Viewed by 4704
Abstract
Photochemical carbosilylation of Lu3N@Ih-C80 was performed using siliranes (silacyclopropanes) to afford the corresponding [5,6]- and [6,6]-adducts. Electrochemical studies indicated that the redox potentials of the carbosilylated derivatives were shifted cathodically in comparison with those of the [5,6]-pyrrolidino [...] Read more.
Photochemical carbosilylation of Lu3N@Ih-C80 was performed using siliranes (silacyclopropanes) to afford the corresponding [5,6]- and [6,6]-adducts. Electrochemical studies indicated that the redox potentials of the carbosilylated derivatives were shifted cathodically in comparison with those of the [5,6]-pyrrolidino adducts. The electronic effect of the silirane addends on Lu3N@Ih-C80 was verified on the basis of density functional theory calculations. Full article
(This article belongs to the Special Issue Cutting-Edge Organic Chemistry in Japan)
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