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:2
Tb2O3 + 6 HCl → 2 TbCl3 + 3 H2OIt can also be obtained by direct reaction of the elements:3
2 Tb + 3 Cl2 → 2 TbCl3Properties
Terbium(III) chloride is a white, hygroscopic powder.4 It crystallizes in an orthorhombic plutonium(III) bromide crystal structure with space group Cmcm (No. 63).56 It can form a complex Tb(gly)3Cl3·3H2O with glycine.7
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.8
Hazards
Terbium(III) chloride causes hyperemia of the iris.9 Conditions/substances to avoid are: heat, acids and acid fumes.
References
Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6 /wiki/ISBN_(identifier) ↩
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. 27 (3): 372–375. Bibcode:2009JREar..27..372X. doi:10.1016/S1002-0721(08)60253-7.{{cite journal}}: CS1 maint: multiple names: authors list (link) /w/index.php?title=Journal_of_Rare_Earths&action=edit&redlink=1 ↩
Webelements: Terbium http://www.webelements.com/terbium/chemistry.html ↩
Lide, David R.; CRC Press, eds. (2006). CRC handbook of chemistry and physics: a ready-reference book of chemical and physical data (87. ed., 2006-2007 ed.). Boca Raton, Fla.: CRC, Taylor & Francis. ISBN 978-0-8493-0487-3. 978-0-8493-0487-3 ↩
Paetzold, Peter (2009-09-10). Chemie: Eine Einführung (in German). Walter de Gruyter. ISBN 978-3-11-021135-1. 978-3-11-021135-1 ↩
Trotter, J., ed. (30 November 1986). Metals. Structure reports A. Dordrecht: Reidel. ISBN 978-90-277-2385-7. 978-90-277-2385-7 ↩
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: Terbium chloride http://www.metall.com.cn/tbcl.htm ↩
George C. Y. Chiou (1999). Ophthalmic toxicology (2nd ed.). CRC Press. ISBN 1-56032-722-7. 1-56032-722-7 ↩