Acta Crystallographica Section A

Foundations of Crystallography

Volume 57, Part 1 (January 2001)

short communications

Acta Cryst. (2001). A57, 110-111 [ doi:10.1107/S010876730001151X ]

The invariant cubic rod (cylinder) packings: symmetries and coordinates

M. O'Keeffe, J. Plévert, Y. Teshima, Y. Watanabe and T. Ogama

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.