Ammoniated alkali fullerides (ND₃)<sub>x</sub>NaA₂C₆₀: Ammonia specific effects and superconductivity

Margadonna, S.; Aslanis, E.; Prassides, K.

doi:10.1021/ja026775k

Ammoniated alkali fullerides (ND₃)<sub>x</sub>NaA₂C₆₀: Ammonia specific effects and superconductivity

Margadonna, S.; Aslanis, E.; Prassides, K.

Authors

S. Margadonna

E. Aslanis

K. Prassides

Abstract

The crystal structure of the superconducting (ND3)xNaA2C60 (0.7 x 1, A= K, Rb) fullerides (Tc= 6-15 K) has been studied by synchrotron X-ray and neutron powder diffraction. It is face-centered cubic (fcc) to low temperatures with Na+-ND3 pairs residing in the octahedral interstices. These are disordered over the corners of two "interpenetrating" cubes with the Na+ ions and the N atoms displaced by ~2.0 Å and ~0.5 Å from the center of the site and statically disordered over the corners of the inner and outer cube, respectively. Close contacts between the D atoms of the ND3 molecules and electron rich 6:6 C-C bonds of neighboring C60 units provide the signature of weak N-D··· hydrogen-bonding interactions, which control the intermolecular packing in the crystal and may determine the unusual superconducting properties.

Citation

Margadonna, S., Aslanis, E., & Prassides, K. (2002). Ammoniated alkali fullerides (ND₃)xNaA₂C₆₀: Ammonia specific effects and superconductivity. Journal of the American Chemical Society, 124(34), 10146-10156. https://doi.org/10.1021/ja026775k

Journal Article Type	Article
Publication Date	2002-08
Deposit Date	Apr 12, 2007
Journal	Journal of the American Chemical Society
Print ISSN	0002-7863
Electronic ISSN	1520-5126
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	124
Issue	34
Pages	10146-10156
DOI	https://doi.org/10.1021/ja026775k