STRUCTURE AND BONDING IN ALKALI-METAL-DOPED C60

被引：344

作者：

ZHOU, O ^{[1
]}

FISCHER, JE ^{[1
]}

COUSTEL, N ^{[1
]}

KYCIA, S ^{[1
]}

ZHU, Q ^{[1
]}

MCGHIE, AR ^{[1
]}

ROMANOW, WJ ^{[1
]}

MCCAULEY, JP ^{[1
]}

SMITH, AB ^{[1
]}

COX, DE ^{[1
]}

机构：

[1] UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104

来源：

NATURE | 1991年 / 351卷 / 6326期

关键词：

D O I：

10.1038/351462a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

IT has been shown recently that M(x)C60 (M = alkali metal) is metallic at 300 K for some M and x (ref. 1) and superconducts below 18 K for M = potassium 2. These observations give further impetus to studies of the molecular 3 and solid-state 4 properties of fullerenes. Here we report on X-ray diffraction studies of the structure and bonding in alkali-metal-doped solid C60 (fullerite). Powder diffraction data obtained from equilibrium compositions of C60 doped to saturation with K or Cs show that the face-centred cubic lattice of pure C60 (refs 5-7) transforms to body-centred cubic at these doping levels, with a saturation composition close to M6C60. The rotational disorder of the fullerene molecules in pure C60 at 300 K is absent in the fully doped compounds.

引用

页码：462 / 464

页数：3

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