Stabilization of Fully Deprotonated Melaminate Anions (C 3 N 6 ) 6– in M 3 (C 3 N 6 ) (M = Cd, Ca) - Pascal L. Jurzick; Lukas Brüning; Björn Winkler; YiXu Wang; Richard Dronskowski; Elena Bykova; Dominik Spahr; Michael Hanfland; Björn Wehinger; Nico Giordano; Maxim Bykov (Journal of the American Chemical Society, 2026)