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Terbium(III) chloride

(nine-coordinate) Dysprosium(III) chloride

Terbium(III) chloride (TbCl3) is a chemical compound. In the solid state TbCl3 has the YCl3 layer structure. Terbium(III) chloride frequently forms a hexahydrate.

Preparation

The hexahydrate of terbium(III) chloride can be obtained by the reaction of terbium(III) oxide and hydrochloric acid:

:Tb2O3 + 6 HCl → 2 TbCl3 + 3 H2O

It can also be obtained by direct reaction of the elements:

:2 Tb + 3 Cl2 → 2 TbCl3

Properties

Terbium(III) chloride is a white, hygroscopic powder. It crystallizes in an orthorhombic plutonium(III) bromide crystal structure with space group Cmcm (No. 63). It can form a complex Tb(gly)3Cl3·3H2O with glycine.

Applications

The hexahydrate plays an important role as an activator of green phosphors in color TV tubes and is also used in specialty lasers and as a dopant in solid-state devices.

Hazards

Terbium(III) chloride causes hyperemia of the iris.

References

GHS: [https://www.sigmaaldrich.com/product/ALDRICH/204560 Sigma-Alderich 204560]
Wells A.F. (1984) ''Structural Inorganic Chemistry'' 5th edition Oxford Science Publications {{ISBN. 0-19-855370-6
XU Lijuan (许丽娟), LI Yanqiu (李艳秋), LI Xia (李夏). (2009). "Synthesis, crystal structure and characterization of one-dimension complex constructed by terbium(III) and 2-iodobenzoate". [[Journal of Rare Earths]].
Webelements: [http://www.webelements.com/terbium/chemistry.html Terbium]
(2006). "CRC handbook of chemistry and physics: a ready-reference book of chemical and physical data". CRC, Taylor & Francis.
Paetzold, Peter. (2009-09-10). "Chemie: Eine Einführung". Walter de Gruyter.
(30 November 1986). "Metals". Reidel.
郑平, 陈文生, 张洪权,等. 量热法测定氯化铽甘氨酸配合物及其配离子的标准生成焓[J]. 湖北大学学报(自科版), 2011, 33(3):270-274.
METALL RARE EARTH LIMITED: [http://www.metall.com.cn/tbcl.htm Terbium chloride]
George C. Y. Chiou. (1999). "Ophthalmic toxicology". CRC Press.

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chlorides lanthanide-halides terbium-compounds

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