Abstract
The rare-earth germanates Ln 2Ge 2O 7 have been structurally determined as three triclinic structural forms ( Ln = LaGd) and one tetragonal ( Ln = GdLu). The structural determination of the high temperature form La 2Ge 2O 7, which is presented here, gives rise to a fourth triclinic structural type. The complete description of the Ln 2Ge 2O 7 phases, stable a ordinary pressure, is thus achieved. Refinement was carried out by the heavy atom method on a model which could be elaborated after the comparative study of the three triclinic forms. Space group: P1, a = 7.080(2), b = 7.101(3), c = 6.928(2) Å, α = 87.74(2), β = 91.25(2), γ = 115.81(2)°, Z = 2, R = 0.065, R w = 0.083 for 4018 reflections. A global structural analysis of all the four triclinic phases is proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
