FORMATION ENERGY OF ALKALI-METAL-DOPED FULLERITE COMPOUNDS A6C60

被引：23

作者：

CHEN, HS

KORTAN, AR

HADDON, RC

KOPYLOV, N

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 13期

关键词：

D O I：

10.1021/j100115a004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formation energy, DELTAH(f), of fullerite intercalation compounds A(n)C60 with A = Na, K, Rb, and Cs and n = 6 is measured using differential scanning calorimetry. The alkali metals, K, Rb, and Cs react with C60 Powders readily and directly form the bcc A6C60. DELTAH(f) values are found to be -28,-39,-40, and -47 kcal/mol per alkali metal for Na, K, Rb, and Cs, respectively. The activation energy of diffusion of the alkali metals Rb and Cs in the corresponding A6C60 compound is evaluated to be approximately 30 kcal/mol.

引用

收藏

页码：3088 / 3090

页数：3

相关论文

共 25 条

[1] THERMODYNAMICS OF C-60 IN PURE O2, N2, AND AR [J].

CHEN, HS ;

KORTAN, AR ;

HADDON, RC ;

FLEMING, DA .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (03) :1016-1018

[2] MOLECULAR-DYNAMICS INVESTIGATION OF ALKALI-METAL-DOPED FULLERITES [J].

CHENG, AL ;

KLEIN, ML .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (24) :9622-9625

[3]

CHRISTIAN JW, 1975, THEORY TRANSFORMATIO, P483

[4] ELECTRONIC-STRUCTURE OF CRYSTALLINE K6C60 [J].

ERWIN, SC ;

PEDERSON, MR .

PHYSICAL REVIEW LETTERS, 1991, 67 (12) :1610-1613

[5]

FLEMING RM, 1991, MATER RES SOC SYMP P, V206, P691

[6] ELECTRONIC-STRUCTURE, CONDUCTIVITY, AND SUPERCONDUCTIVITY OF ALKALI-METAL DOPED C-60 [J].

HADDON, RC .

ACCOUNTS OF CHEMICAL RESEARCH, 1992, 25 (03) :127-133

[7] ELECTRONIC-STRUCTURE AND BONDING IN ICOSAHEDRAL C-60 [J].

HADDON, RC ;

BRUS, LE ;

RAGHAVACHARI, K .

CHEMICAL PHYSICS LETTERS, 1986, 125 (5-6) :459-464

[8] SUPERCONDUCTIVITY AT 18-K IN POTASSIUM-DOPED C-60 [J].

HEBARD, AF ;

ROSSEINSKY, MJ ;

HADDON, RC ;

MURPHY, DW ;

GLARUM, SH ;

PALSTRA, TTM ;

RAMIREZ, AP ;

KORTAN, AR .

NATURE, 1991, 350 (6319) :600-601

[9] ALKALI-FULLERIDE SUPERCONDUCTORS - SYNTHESIS, COMPOSITION, AND DIAMAGNETIC SHIELDING [J].

HOLCZER, K ;

KLEIN, O ;

HUANG, SM ;

KANER, RB ;

FU, KJ ;

WHETTEN, RL ;

DIEDERICH, F .

SCIENCE, 1991, 252 (5009) :1154-1157

[10]

KRATSCHMER N, 1990, NATURE, V347, P354