Author/Authors :
Céolin، نويسنده , , R. and Lَpez، نويسنده , , D.O. and Barrio، نويسنده , , Pablo M. and Tamarit، نويسنده , , J.Ll. and Espeau، نويسنده , , P. and Nicolaï، نويسنده , , B. and Allouchi، نويسنده , , H. and Papoular، نويسنده , , R.، نويسنده ,
Abstract :
Crystals grown by evaporating C60 solutions in n-nonane were found to be crystals of the C60 · 2/3 n-nonane solvate, after they were stored for eight years in the dark at room temperature. The lattice is an I-centered orthorhombic lattice (a = 10.10(1) Å, b = 10.19(1) Å, c = 48.71(5) Å), that forms with a negative excess volume of about −3.1%, and loses its solvent from about 399 K with an enthalpy change of about 49 J per gram of solvate. Thermodynamic and crystallographic data for available C60–n-alcane solvates are discussed and a van der Waals volume of ≈603 Å3 per C60 isolated molecule is proposed.
