title: Methylaminated potassium fulleride, (CH3NH2)K3C60: towards hyperexpanded fulleride lattices.
abstract: Co-intercalation of methylamine molecules into the cubic K3C60 lattice affords the fulleride (CH3NH2)K3C60, which was characterized by Raman and MAS 13C and 1H NMR spectroscopy. The high-resolution synchrotron X-ray powder diffraction technique was employed to determine its crystal structure at ambient temperature. We find that CH3NH2 bonds to K+ ions residing in the pseudo-octahedral interstices, thereby providing an efficient and facile route to hyperexpanded close-packed strongly anisotropic fulleride lattices, while retaining the electronic contact between the C603- anions. Preliminary evidence for the occurrence of a transition to an antiferromagnetic state at low temperature is also presented, consistent with the proximity of the present system to the metal-insulator boundary of the electronic phase diagram of C603- fullerides.
authors.affiliation: Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
authors.forename: Alexey Yu
authors.initials: AY
authors.lastname: Ganin
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Takabayashi
authors.forename: Craig A
authors.initials: CA
authors.lastname: Bridges
authors.forename: Yaroslav Z
authors.initials: YZ
authors.lastname: Khimyak
authors.forename: Serena
authors.initials: S
authors.lastname: Margadonna
authors.forename: Kosmas
authors.initials: K
authors.lastname: Prassides
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Rosseinsky