| Title | One-Pot Hydrothermal Synthesis of Tb(III)13(GeO4)6O7(OH) and K2Tb(IV)Ge2O7: Preparation of a Stable Terbium(4+) Complex. |
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| Authors | Fulle, K.; Sanjeewa, L.D.; McMillen, C.D.; Wen, Y.; Rajamanthrilage, A.C.; Anker, J.N.; Chumanov, G.; Kolis, J.W. |
| Journal | Inorg Chem |
| 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 Tb(4+) oxidation state in the solid state. |
See more Terbium products. Terbium (atomic symbol: Tb, atomic number: 65) is a Block F, Group 3, Period 6 element with an atomic radius of 158.92535.
The number of electrons in each of Terbium's shells is [2, 8, 18, 27, 8, 2] and its electron configuration is [Xe]4f9 6s2. The terbium atom has a radius of 177 pm and a Van der Waals radius of 221 pm.Terbium was discovered and first isolated by Carl Gustaf Mosander in 1842. In its elemental form, terbium is a silvery-white soft metal. Terbium is found in cerite, gadolinite, and monazite. It is not found in nature as a free element. 
Terbium compounds are brightly fluorescent, and a majority of the world's terbium supply is used for creating green phosphors that enable trichromatic lighting technology. It is also frequently used as a dopant for crystalline solid-state devices and fuel cell materials. It is named after Ytterby, the town in Sweden where it was discovered.