Submetrisiin

Submetrisiin is a fictional inorganic compound described in speculative chemistry and worldbuilding contexts as a layered, high-temperature solid with unusual electrical properties. The name combines subse- meaning below and imagery of layered structures, reflecting its proposed two-dimensional arrangement.

In the hypothetical structure, submetrisiin comprises alternating metal-oxide layers and metallo-silicate layers arranged in a quasi-two-dimensional lattice. A common fictional formulation envisions a general formula expressed as SrxMyOz, where rare-earth or transition metals occupy the metal sites. In practice, authors describe a representative analogue with a density around 3.0 g/cm3 and a high melting point, exceeding 1100°C, with strong anisotropy in mechanical and electrical properties.

Properties are typically described as highly thermally stable and chemically inert, resistant to oxidation and moisture, with poor to moderate isotropic conductivity and strong directional conductivity along the layer planes. The material is said to exhibit unusual dielectric behavior and potential catalytic activity on exposed edge sites in some worldbuilding depictions.

Synthesis and occurrence are speculative: proposed routes include high-pressure sintering of oxide precursors with a fluorides or chlorides flux, or plasma-assisted deposition onto substrates. Conceptually, submetrisiin is imagined to form under subduction-zone–like metamorphic conditions or in rapidly quenched high-temperature environments in fictional settings.

Applications in narratives and theoretical discussions center on protective coatings, high-temperature ceramics, and energy-storage concepts, where its layered, robust nature is a theoretical advantage. See also layered silicates, chalcogenides, and anisotropic materials.