Stabilization of Fully Deprotonated Melaminate Anions (C₃N₆)^6- in M₃(C₃N₆) (M = Cd, Ca).

ABSTRACT: Hydrogen-free melaminate salts M₃(C₃N₆) (M = Cd, Ca) were synthesized in laser-heated diamond anvil cells at 34-48 GPa and 2000-2500 K. Cd₃(C₃N₆) was synthesized via a direct reaction between the elements, while Ca₃(C₃N₆) was obtained following a rational chemical design approach from calcium carbodiimide, Ca(NCN), which served as a single-source precursor. Both compounds contain the fully deprotonated melaminate anion (C₃N₆)^6-, representing a fundamental milestone in nitridocarbonate chemistry. The crystal structures of M₃(C₃N₆) were solved and refined using synchrotron single-crystal X-ray diffraction data and were fully corr

SUBMITTER: Jurzick PL 

PROVIDER: S-EPMC12856887 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature