R. Bruce King: Structure and Bonding in Zintl Ions and Related Main Group Element Clusters Stefanie Gärtner, Nikolaus Korber: Polyanions of Group 14 and Group 15 Elements in Alkali and Alkaline Earth Metal Solid State Compounds and Solvate Structures Bryan Eichhorn, Sanem Kocak: Dynamic Properties of the Group 14 Zintl Ions and Their Derivatives Thomas F. Fässler: Relationships between soluble Zintl anions, ligand-stabilized cage compounds, and intermetalloid clusters of tetrel (Si - Pb) and pentel (P - Bi) elements Gerasimos S. Armatas, Mercouri Kanatzidis: Germanium-Based Porous Semiconductors from Molecular Zintl Anions