Abstract
The subsolidus region of the Rb2MoO4-Er2(MoO4)3-Hf(MoO4)2 ternary salt system is studied using X-ray powder diffraction. A novel 5: 1: 2 triple molybdate, Rb5ErHf(MoO4)6, is found to form in the system. Crystals of Rb5ErHf(MoO4)6 are flux-grown under spontaneous nucleation conditions. The composition and crystal structure of Rb5ErHf(MoO4)6 are refined in a single-crystal X-ray diffraction experiment (X8 APEX diffractometer, MoK α radiation, 1753 reflections, R = 0.0183). The crystals are trigonal; a = 10.7511(1) A, c = 38.6543(7) A, V = 3869.31(9) A3, d calc = 4.462 g/cm3, Z = 6, space group % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOuaiqaio% dagaqeaiaadogaaaa!3881! $$R\bar 3c$$ . The mixed three-dimensional framework of the structure is formed of MoO4 tetrahedra, each sharing corners with two ErO6 and HfO6 octahedra. Two types of Rb atoms occupy large cavities of the framework. The distribution of the Er3+ and Hf4+ cation over two positions is refined in the course of structure solution.
Sign-in/Register to access full text options 
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.
