The reversible formation of a single-bonded (C60-)2 dimer in ionic charge transfer complex:: Cp*2Cr•C60(C6H4Cl2)2.: The molecular structure of (C60-)2

被引：85

作者：

Konarev, DV ^{[1
]}

Khasanov, SS ^{[1
]}

Otsuka, A ^{[1
]}

Saito, G ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Div Chem, Sakyo Ku, Kyoto 6068502, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 29期

关键词：

D O I：

10.1021/ja0202614

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new ionic complex of C60 with decamethylchromocene, Cp*2Cr·C60(C6H4Cl2)2 (1), has been obtained. The fullerides are monomeric in 1 at room temperature, whereas they form a single-bonded (C60-)2 dimer at low temperatures, the structure of which has been studied by the X-ray diffraction on a single crystal at 100 K. The length of the intercage C-C bond is 1.597(7) Å and the interfullerene distance is equal to 9.28 Å. A phase transition attributed to the reversible C60•- dimerization is observed in the 220-200 K range. The transition is accompanied by changes in the unit cell parameters, the decrease of the magnetic moment from 4.20 μB (S = 3/2, 1/2) to 3.88 μB (S = 3/2) and the appearance of EPR signal from Cp*2Cr+, simultaneously. Copyright © 2002 American Chemical Society.

引用

页码：8520 / 8521

页数：2

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