Solid-state studies on C60 solvates grown from n-heptane

Autor:	V. N. Agafonov, Siro Toscani, René Céolin, Henri Szwarc, G. Keller, Anne Gonthier-Vassal, Claude Fabre, André Rassat, Bernard Bachet
Rok vydání:	1995
Předmět:	Heptane chemistry.chemical_compound Crystallography Chemistry Lattice (order) Enthalpy Solid-state General Physics and Astronomy Binary compound Orthorhombic crystal system Sublimation (phase transition) Physical and Theoretical Chemistry Toluene
Zdroj:	Chemical Physics Letters. 244:100-104
ISSN:	0009-2614
Popis:	Crystallographic and thermodynamic experiments show that crystalline C60 obtained by slow evaporation of solutions in n-heptane is a C60, n-heptane 1:1 solvate. Its lattice is hexagonal, Laue class 6/mmm, with a = 10.00(4) A and c = 10.16(1) A. No transition is observed at temperatures higher than 100 K, and desolvation into fcc C60 occurs at about 360 K with ΔH = +43.5 J g−1, close to the sublimation enthalpy for pure n-heptane. Another binary compound, presumably a polymorph of the former, is sometimes obtained by rapid evaporation of toluene + n-heptane mixtures. Its lattice is orthorhombic, Immm, with a = 10.07 A, b = 10.22 A and c = 48.9 A.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d44409d8f14ce7d4b3bba0e322f6178d https://doi.org/10.1016/0009-2614(95)00886-9 Zobrazit plný text záznamu Full Text from ScienceDirect