One-Pot Hydrothermal Synthesis of TbIII13(GeO4)6O7(OH) and K2TbIVGe2O7: Preparation of a Stable Terbium(4+) Complex

Kyle Fulle; Liurukara D Sanjeewa; Colin D McMillen; Yimei Wen; Apeksha C Rajamanthrilage; Jeffrey N Anker; George Chumanov; Joseph W Kolis

doi:10.1021/acs.inorgchem.7b00821

One-Pot Hydrothermal Synthesis of Tb^III₁₃(GeO₄)₆O₇(OH) and K₂Tb^IVGe₂O₇: Preparation of a Stable Terbium(4+) Complex

Inorg Chem. 2017 Jun 5;56(11):6044-6047. doi: 10.1021/acs.inorgchem.7b00821. Epub 2017 May 24.

Authors

Kyle Fulle¹, Liurukara D Sanjeewa¹, Colin D McMillen¹, Yimei Wen¹, Apeksha C Rajamanthrilage¹, Jeffrey N Anker¹, George Chumanov¹, Joseph W Kolis¹

Affiliation

¹ Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University , Clemson, South Carolina 29634-0973, United States.

PMID: 28537716
DOI: 10.1021/acs.inorgchem.7b00821

Abstract

Two terbium germanates have been synthesized via high-temperature and high-pressure hydrothermal synthesis with 20 M KOH as a mineralizer using Tb₄O₇ as a starting material. Tb₁₃(GeO₄)₆O₇(OH) crystallizes in trigonal space group R3̅, is built up of isolated GeO₄ units, and contains a complex arrangement of terbium oxide polyhedra. K₂TbGe₂O₇ is a terbium(4+) pyrogermanate that is isostructural with K₂ZrGe₂O₇ and displays a rare stable Tb⁴⁺ oxidation state in the solid state.