Two earlier papers by Teo and the author [J. Chem. Phys. 83, 6520 (1985); Inorg. Chem. 25, 2315 (1986)] studied circular and spherical clusters in the simplest close-packed structures in two and three dimensions. The present work considers clusters in other fundamental structures (the hexagonal net, diamond), and applies the results to study clusters in related structures (Lonsdaleite, graphite) and in binary arrays with the structure of the idealized ionic crystals NaCl, CsCl, ZnS, CaF2, TiO2, O3Bi2.
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N. J. A. Sloane (1987) studied this question.
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