A New High Pressure Calcium Silicate with Five-Coordinated Silicon, α-CaSi2O5Synthesized at 1500°C and 10 GPa

Y. Kudoh, M. Kanzaki

    Research output: Contribution to journalArticlepeer-review


    Crystal structure of α-CaSi2O5 synthesized at conditions of 1500°C and 10 GPa, has been solved and refined in œntrosymmetric space group PL The structure is closely related to that of titanite, CaTiSiO5 and consists the square pyramid five-fold coordination of silicon by oxygen. The ionic radius for five-coordinated Si calculated from the bond distances is 0.33 Å.

    Original languageEnglish
    Pages (from-to)131-133
    Number of pages3
    JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
    Publication statusPublished - 1998


    • CaSiO
    • Crystal structure
    • Five-coordinated silicon
    • Square pyramid

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics


    Dive into the research topics of 'A New High Pressure Calcium Silicate with Five-Coordinated Silicon, α-CaSi<sub>2</sub>O<sub>5</sub>Synthesized at 1500°C and 10 GPa'. Together they form a unique fingerprint.

    Cite this