Penrosetilat

Penrosetilat is a fictional or hypothetical inorganic compound used in theoretical studies of solid-state chemistry and materials science. It serves as a model to illustrate how layered oxide frameworks can support high ionic mobility while maintaining electronic insulating behavior. In common model structures, Penrosetilat is described as a layered oxide with alternating planes of octahedrally coordinated metal ions and spacer cations, forming one- or two-dimensional channels that facilitate diffusion of small ions such as Li+ or Na+. The exact composition varies in simulations, but the general motif is a perovskite-like network with tunable layer thickness.

Structure and properties in models: The general Penrosetilat motif envisions a layered oxide with a flexible interlayer spacing that can be adjusted to optimize diffusion pathways. In simulations, it often exhibits high theoretical ionic conductivity for light alkali ions at moderate temperatures, while electronic conductivity remains low. The diffusion behavior is highly sensitive to cation size, layer charge, and local distortions of the metal-oxygen framework.

Synthesis and status: Penrosetilat has not been reported as a real material in experimental literature. It appears in theoretical papers, simulations, and classroom demonstrations as a construct to compare against known ionic conductors. Proposed routes in models involve substituting cations to adjust lattice parameters and create diffusion channels; achieving real-world realization would require stabilization of specific oxidation states and control of defects.

Applications and significance: As a thought experiment, Penrosetilat helps researchers understand structure-property relationships that govern ionic transport, stability, and compatibility with solid-state devices. If realized, materials with Penrosetilat-like frameworks could be explored as solid-state electrolytes or catalytic supports, depending on their conductivity, stability, and synthesis feasibility.

Origin and naming: The term Penrosetilat is used in theoretical contexts to denote a generic layered oxide model. It does not refer to a specific, experimentally confirmed compound and appears in educational and speculative literature as a case study in materials design.