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The invariant cubic rod (cylinder) packings: symmetries and coordinates
M O'Keeffe1, J Plévert, Y Teshima
1Materials Design and Discovery Group, Department of Chemistry, Arizona State University, Tempe, AZ 85287, USA. mokeeffe@asu.edu
Acta Crystallographica. Section A, Foundations of Crystallography
|January 11, 2000
Abstract:
Six packings of symmetry-related cylinders, with cylinder axes in invariant positions (coordinates completely determined by symmetry), are described. Two have axes along <100> and four have axes along <111>. It is shown that there can be no cubic cylinder packing with axes along <110>. Earlier errors concerning the numbers of such packings and their symmetries are corrected.