GdNO336H2O

GdNO₃·6H₂O, or gadolinium(III) nitrate hexahydrate, is an inorganic compound composed of gadolinium, nitrogen, oxygen, and water. Gadolinium is a lanthanide element, a series of rare-earth metals known for their magnetic and luminescent properties. This compound exists as a crystalline solid that incorporates six water molecules within its structure, making it a hydrate.

GdNO₃·6H₂O is typically prepared through the reaction of gadolinium oxide (Gd₂O₃) or gadolinium hydroxide with nitric acid (HNO₃). The resulting solution is then evaporated to crystallize the hydrated nitrate. It is soluble in water and decomposes upon heating, releasing water molecules and eventually forming gadolinium oxide.

The compound is primarily used in research and industrial applications where gadolinium’s unique magnetic and optical properties are exploited. In analytical chemistry, GdNO₃·6H₂O serves as a precursor for the synthesis of other gadolinium compounds, including oxides, salts, and coordination complexes. It is also utilized in the preparation of gadolinium-based contrast agents for medical imaging, such as MRI (magnetic resonance imaging) contrast agents, due to gadolinium’s strong paramagnetic properties.

GdNO₃·6H₂O is stored in a dry environment to prevent hydrolysis and decomposition. Handling should be done with care, as gadolinium compounds can be irritating to skin and eyes, and exposure to concentrated nitric acid poses additional hazards. Proper protective equipment, such as gloves and goggles, is recommended when working with this compound.