Gadolinium(III) chloride

Gadolinium(III) chloride

Names
IUPAC name Gadolinium(III) chloride
Other names Gadolinium trichloride Gadolinium chloride
Identifiers
CAS Number	10138-52-0 Y 19423-81-5 (hydrate) N 13450-84-5 (hexahydrate) Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:37288 Y
ChEMBL	ChEMBL1697696 N
ChemSpider	55406 Y
ECHA InfoCard	100.030.338
PubChem CID	61486
UNII	P7082WY76D Y
CompTox Dashboard (EPA)	DTXSID2044761
InChI InChI=1S/3ClH.Gd/h3*1H;/q;;;+3/p-3 Y Key: MEANOSLIBWSCIT-UHFFFAOYSA-K Y InChI=1/3ClH.Gd/h3*1H;/q;;;+3/p-3 Key: MEANOSLIBWSCIT-DFZHHIFOAP
SMILES Cl[Gd](Cl)Cl
Properties
Chemical formula	GdCl3
Molar mass	263.61 g/mol
Appearance	white crystals hygroscopic
Density	4.52 g/cm3
Melting point	609 °C (1,128 °F; 882 K)
Boiling point	1,580 °C (2,880 °F; 1,850 K)
Solubility in water	94.65 g/100mL, 25°C[1]
Magnetic susceptibility (χ)	+27,930·10−6 cm3/mol
Structure
Crystal structure	hexagonal, hP8
Space group	P63/m, No. 176
Related compounds
Other anions	Gadolinium(III) fluoride Gadolinium(III) bromide Gadolinium(III) oxide
Other cations	Europium(III) chloride Terbium(III) chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Gadolinium(III) chloride, also known as gadolinium trichloride, is GdCl₃. It is a colorless, hygroscopic, water-soluble solid. The hexahydrate GdCl₃∙6H₂O is commonly encountered and is sometimes also called gadolinium trichloride. Gd³⁺ species are of special interest because the ion has the maximum number of unpaired spins possible, at least for known elements. With seven valence electrons and seven available f-orbitals, all seven electrons are unpaired and symmetrically arranged around the metal. The high magnetism and high symmetry combine to make Gd³⁺ a useful component in NMR spectroscopy and MRI.