Thulium(III) chloride

Thulium(III) chloride

Names
IUPAC name Thulium(III) chloride
Other names Thulium chloride, thulium trichloride
Identifiers
CAS Number	13537-18-3
EC Number	236-904-9
Jmol 3D model	Interactive image
PubChem	61643
RTECS number	XP0525000
InChI InChI=1S/3ClH.Tm/h3*1H;/q;;;+3/p-3
SMILES Cl[Tm](Cl)Cl
Properties
Chemical 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
Structure
Crystal structure	Monoclinic, mS16
Space group	C12/m1, No. 12
Coordination geometry	6
Thermochemistry
Std enthalpy of formation (ΔfHo298)	966.6 kJ/mol
Vapor pressure	{{{value}}}
Related compounds
Other anions	Thulium(III) oxide
Other cations	Erbium(III) chloride Ytterbium(III) chloride Thulium(II) chloride
Except where otherwise noted, 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.

Reactions

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