Anisotropic Magnetic Behavior of Anionic Ce@C82 Carbene Adducts

被引：51

作者：

Takano, Yuta ^{[1
]}

Aoyagi, Motoki ^{[1
]}

Yamada, Michio ^{[1
]}

Nikawa, Hidefumi ^{[1
]}

Slanina, Zdenek ^{[1
]}

Mizorogi, Naomi ^{[1
]}

Ishitsuka, Midori O. ^{[1
]}

Tsuchiya, Takahiro ^{[1
]}

Maeda, Yutaka ^{[2
]}

Akasaka, Takeshi ^{[1
]}

Kato, Tatsuhisa ^{[3
]}

Nagase, Shigeru ^{[4
]}

机构：

[1] Univ Tsukuba, Ctr Tsukuba Adv Res Alliance, Tsukuba, Ibaraki 3058577, Japan

[2] Tokyo Gakugei Univ, Dept Chem, Tokyo 1848501, Japan

[3] Josai Univ, Dept Chem, Sakaido, Saitama 3500295, Japan

[4] Inst Mol Sci, Dept Theoret & Computat Mol Sci, Okazaki, Aichi 4448585, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 26期

关键词：

ENDOHEDRAL METALLOFULLERENE DY-AT-C-82; LANGMUIR-BLODGETT-FILMS; ELECTRONIC-PROPERTIES; M-AT-C-82; M; PHOTOELECTROCHEMISTRY; RELAXIVITY; CARBON; SHIFTS; CAGES; ATOMS;

D O I：

10.1021/ja902106a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Derivatives of Ce@C-82(C-2v) have been synthesized and fully characterized, and their anisotropic magnetism has been observed as paramagnetic shifts in NMR measurements. Carbene addition by photochemical reaction afforded two isomers of Ce@C-82(C-2v)Ad (Ad = adamantylidene), 2a and 2b, demonstrating high regioselectivity. The two isomers were characterized using MALDI-TOF mass spectrometry, vis-NIR absorption spectroscopy, H-1 and C-13 NMR spectroscopy, and electrochemistry. The structure of the minor isomer (2b) was elucidated by single-crystal X-ray structural analysis. C-13 and H-1 NMR measurements revealed the characteristic anisotropic interaction between the f electron on the Ce atom and nuclear spins of the carbon atoms of the cage and the protons of the Ad group, respectively.

引用

页码：9340 / 9346

页数：7

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