Thulium(III) chloride

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Thulium(III) chloride
Aluminium-trichloride-crystal-3D-balls.png
Identifiers
CAS number 13537-18-3
PubChem 61643
EC number 236-904-9
RTECS number XP0525000
Jmol-3D images Image 1
Properties
Molecular formula TmCl3
Molar mass 275.292 g/mol
Appearance yellow crystals
Density 3.98 g/cm³
Melting point 824 °C (1,515 °F; 1,097 K)
Boiling point 1,490 °C (2,710 °F; 1,760 K)
Solubility in water heptahydrate: very soluble
Solubility heptahydrate: very soluble in ethanol[1]
Structure
Crystal structure Monoclinic, mS16
Space group C12/m1, No. 12
Coordination
geometry
6[2]
Thermochemistry
Std enthalpy of
formation
ΔfHo298
966.6 kJ/mol[3]
Hazards
S-phrases S26, S36[4]
Main hazards Xi (Irritant)
Related compounds
Other anions Thulium(III) oxide
Other cations Erbium(III) chloride
Ytterbium(III) chloride
Thulium(II) chloride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Thulium(III) chloride or thulium trichloride is the chemical compound composed of thulium and chlorine with the formula TmCl3. It forms yellow crystals. Thulium(III) chloride has the YCl3 (AlCl3) layer structure with octahedral thulium ions.[5]

Reactions[edit]

The hydrated form of thulium(III) chloride can be obtained by adding thulium(III) oxide to concentrated hydrochloric acid.[1] Thulium(III) chloride reacts with strong bases to make thulium(III) oxide.

References[edit]

  1. ^ a b Spencer, James F. (1919). "The Metals of the Rare Earths". New York: Longmans, Green, and Co. p. 152. Retrieved 2008-06-27. 
  2. ^ "Chemistry: Periodic Table: Thulium: compound data (thulium (III) chloride)". WebElements. Retrieved 2008-06-27. 
  3. ^ Perry, Dale L.; Phillips, Sidney L. (1995). Handbook of Inorganic Compounds. CRC Press. p. 512. ISBN 0-8493-8671-3. Retrieved 2008-06-27. 
  4. ^ "439649 Thulium(III) chloride anhydrous, powder, 99.99% trace metals basis". Sigma-Aldrich. Retrieved 2008-06-27. 
  5. ^ Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6