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Methylaminated potassium fulleride, (CH3NH2)K3C60 : towards hyperexpanded fulleride lattices.

Ganin, A. Y. and Takabayashi, Y. and Bridges, C. A. and Khimyak, Y. Z. and Margadonna, S. and Prassides, K. and Rosseinsky, M. J. (2006) 'Methylaminated potassium fulleride, (CH3NH2)K3C60 : towards hyperexpanded fulleride lattices.', Journal of the American Chemical Society., 128 (46). pp. 14784-14785.


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.

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Record Created:03 May 2007
Last Modified:19 Jul 2017 10:44

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