Rb₂Ca₂Si₂O₇: a new alkali alkaline-earth silicate based on [Si₂O₇]^6- anions.

ABSTRACT: Synthesis experiments were conducted in the ternary Rb₂O-CaO-SiO₂ system, resulting in the formation of a hitherto unknown compound with the composition Rb₂Ca₂Si₂O₇, i.e. dirubidium dicalcium pyrosilicate. Single crystals of sufficient size and quality were recovered from a starting mixture with an Rb₂O:CaO:SiO₂ molar ratio of 2:1:3. The educts were confined in a lid-covered platinum crucible and gradually cooled from 1050 °C at a rate of 0.3 °C min^-1 to 800 °C before being finally quenched in air to ambient conditions. The crystal structure was investigated at -80 and 15 °C from single-crystal X-ray diffraction data, with structure determination performed using direct methods. The compound w

SUBMITTER: Kahlenberg V 

PROVIDER: S-EPMC11881166 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature