Evidence for Distinct Polymer Chain Orientations in KC{sub 60} and RbC{sub 60 }

Journal Article · Sun Nov 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.4420· OSTI ID:664735

Launois, P; Moret, R ^[1]; Hone, J; Zettl, A ^[2]

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1. Laboratoire de Physique des Solides (URA CNRS 2), Universite Paris-Sud, Bat. 510, 91405 Orsay CEDEX (France)
2. Department of Physics, University of California at Berkeley

The KC{sub 60} and RbC{sub 60} polymer phases exhibit contrasting electronic properties while powder diffraction studies have revealed no definite structural difference. We have performed single crystal x-ray diffraction and diffuse scattering studies of these compounds. It is found that KC{sub 60} and RbC{sub 60} possess different chain orientations about their axes, which are described by distinct space groups Pmnn and I2/m , respectively. Such a structural difference will be of great importance to a complete understanding of the physical properties. {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 664735
• Journal Information: Physical Review Letters, Vol. 81, Issue 20; Other Information: PBD: Nov 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FULLERENES
POTASSIUM COMPOUNDS
RUBIDIUM COMPOUNDS
POLYMERS
CHAINS
ORIENTATION
X-RAY DIFFRACTION
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
MONOCRYSTALS