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Thulium(III) iodide
Names
Other names
Thulium iodide Thulium triiodide
Identifiers
ChemSpider
ECHA InfoCard
100.034.052
EC Number
InChI=1S/3HI.Tm/h3*1H;/q;;;+3/p-3
Key: LZOMHYVAEHYDST-UHFFFAOYSA-K
Properties
TmI3
Appearance
Yellow hexagonal crystal
[1]
Melting point
1015 °C
[2]
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Thulium(III) iodide is an
iodide of
thulium , with the
chemical formula of TmI3 . Thulium(III) iodide is used as a component of
metal halide lamps.
[3]
Preparation
Mercury(II) iodide can be heated with
thulium to obtain thulium(III) iodide:
[4]
2 Tm + 3 HgI2 → 2 TmI3 + 3 Hg
The
mercury produced in the reaction can be removed by
distillation .
[5]
[4]
The thulium(III) iodide hydrate crystallized from solution can be heated with
ammonium iodide to obtain the anhydrous form.
[6]
[4]
Properties
Thulium(III) iodide is a yellow, highly
hygroscopic solid with a
bismuth(III) iodide -type
crystal structure .
[4] It forms in the
hexagonal crystal system .
[6] Its hydrate can be heated in
air to obtain TmOI. Its
anhydrous form can be heated with
thulium to obtain TmI2 :
[7]
2 TmI3 + Tm → 3 TmI2
References
^ 王世华,谷亚平,蒋盛邦.在Tm-HgI2 体系中TmI2 生成机理[J].物理化学学报,1987(03):334-336.
^ Jantsch, G.; Zeitschrift fuer Anorganische und Allgemeine Chemie 1933, V212, P65-83 CAPLUS
^ Flesch, Peter G. (2007).
Light and Light Sources: High-Intensity Discharge Lamps . Springer. p. 45.
ISBN
9783540326847 .
^
a
b
c
d
Georg Brauer (Hrsg.), unter Mitarbeit von
Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1077.
^ Asprey, L. B.; Keenan, T. K.; Kruse, F. H. Preparation and crystal data for lanthanide and actinide triiodides. Inorg. Chem., 1964. 3 (8): 1137-1240
^
a
b 无机化学丛书 第七卷 钪 稀土元素. 科学出版社. pp 211
^ L.B. Asprey, F.H. Kruse (1960).
"Divalent thulium. Thulium di-iodide" . Journal of Inorganic and Nuclear Chemistry . 13 (1–2): 32–35.
doi :
10.1016/0022-1902(60)80232-1 .
Archived from the original on 2018-06-09. Retrieved 2018-04-13 . (注:此文献指出Tm+HgI2 的反应生成TmI2 )
Salts and covalent derivatives of the
iodide ion