anionins

Anionins are a hypothetical class of negatively charged ions imagined in speculative chemistry and science fiction. In proposed theoretical models, anionins consist of a central atom or cluster surrounded by ligands, giving a net negative charge of one to three. Predicted geometries include square-planar, octahedral, and other high-symmetry arrangements depending on composition and ligand set. Theoretical calculations often emphasize high electron affinity, significant ligand-field stabilization, and potential for delocalized charge over the framework.

Stability is predicted to depend on ligand strength, solvation, and temperature; some models propose that strong-field ligands and cryogenic conditions could enhance persistence. There are no verified experimental syntheses or natural occurrences of anionins; they have not been reported in mainstream chemical literature. They may appear in computer simulations and in science fiction as conceptual vehicles to study charge transport, catalysis, or materials with unusual redox behavior.

If realizable, potential applications discussed in speculative contexts include ionic liquids with enhanced conductivity, redox-active catalysts, and components for molecular electronics; however, practical realization would face significant energetic and kinetic barriers. The term remains hypothetical and is not established in peer-reviewed chemistry literature, with discussions seen primarily in speculative or fictional contexts.

See also: anions, polyatomic ions, coordination chemistry, theoretical chemistry. References: Conceptual and fictional discussions; no established experimental sources.