# title
Molybdenum chalcogenides: clusters, chains, and extended solids. The approach to bonding in three dimensions

# abstract
A combined molecular orbital and crystal orbital analysis of systems containing Mo3n,X3n+2 (n = 2, 3, 4,  X = S, Se, Te) units is presented. The modes of packing Mo6X8, Mo9X11, and Mo12X14 clusters into crystals are explained in terms of the cluster frontier orbitals. Intercluster Mo-X bonds are seen to result from an interaction between chalcogen donor orbitals and the cluster LUMOs that are localized on Mo atoms residing in the square faces of the clusters. Closed-shell electron counts for the clusters are elucidated. The relationship between the cluster frontier orbitals and surface states is discussed. Finally, relationships between the band structure of (MO3X3), chains and the finite cluster molecular orbitals are explained.  1983, American Chemical Society. All rights reserved.

# publicationVenue.label
Journal of the American Chemical Society

# publicationOutlet
Journal of the American Chemical Society