1 Insight into the Construction of Metal–Organic Polyhedra: Metal–Organic Cubes as a Case Study Mohamed H. Alkordi, † ,‡ Jonathan L. Belof, Edwin Rivera, Lukasz Wojtas, and Mohamed Eddaoudi* †,‡ Department of Chemistry, University of South Florida, Tampa, Florida 33620-5250 Advanced Membranes and Porous Materials Center, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, KSA Mohamed.Eddaoudi@kaust.edu.sa Electronic Supplementary Material (ESI) for Chemical Science This journal is © The Royal Society of Chemistry 2011