Citation: Evgeny Todorov; Slavi C. Sevov (1997). Synthesis, Characterization, Electronic Structure, and Bonding of Heteroatomic Deltahedral Clusters: Na49Cd58.5Sn37.5, A Network Structure Containing the First Empty Icosahedron without a Group 13 Element and the Largest closo-Deltahedron. Journal of the American Chemical Society, 119, pp. 2869-2876.