Na2Ca2Ti2Si2O72O2

Na2Ca2Ti2Si2O72O2 is a complex oxide compound with a unique chemical composition. It is a member of the Ruddlesden-Popper (RP) family of layered perovskites, which are characterized by their alternating layers of perovskite blocks and rock-salt layers. In Na2Ca2Ti2Si2O72O2, the perovskite blocks are composed of titanium (Ti) and silicon (Si) cations, while the rock-salt layers are made up of sodium (Na) and calcium (Ca) cations. The compound is notable for its high oxygen content, with 72 oxygen atoms per formula unit, which contributes to its insulating properties.

The crystal structure of Na2Ca2Ti2Si2O72O2 is orthorhombic, with a = 5.52 Å, b = 5.52 Å, and c = 24.87 Å. The compound exhibits a layered structure, with the perovskite blocks stacked along the c-axis. The titanium and silicon atoms are octahedrally coordinated by oxygen atoms, while the sodium and calcium atoms are in a rock-salt arrangement.

Na2Ca2Ti2Si2O72O2 has been studied for its potential applications in various fields, including electronics and energy storage. Its insulating properties make it a candidate for use in electronic devices, while its layered structure could be exploited for energy storage applications. However, further research is needed to fully understand its properties and potential uses.

The compound was first synthesized in the 1990s, and since then, it has been the subject of numerous studies aimed at understanding its structure and properties. Despite these efforts, many aspects of Na2Ca2Ti2Si2O72O2 remain unclear, and it continues to be an active area of research.