Gadolinium(III) chloride

Hexagonal

A = 736.3 pm c = 410.5 pm

Gd, Cl

Gadolinium

• White odorless powder
• Light gray tubers (hexahydrate )

Fixed

• 4.52 g · cm -3
• 2.424 g · cm -3 ( hydrate at 25 ° C)
• 2.42 g · cm -3 (hexahydrate at 25 ° C)

609 ° C

Soluble in water

Attention

• 378 mg · kg -1 ( LD50, mouse, ip)
• 669 mg · kg -1 ( LD50, mouse, i.p. hexahydrate)
• 100 mg · kg -1 ( LD50, chicken, i.v. hexahydrate)

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Gadolinium ( III) chloride is a chemical compound selected from the group of chlorides.

Production and representation

Gadolinium ( III) chloride can be obtained by the reaction of gadolinium with hydrochloric acid at 600 ° C.

It can also be obtained through the synthesis and subsequent thermal decomposition of (NH4 ) 2 [ GdCl5 ] at 300 ° C.

Properties

Gadolinium ( III ) chloride is a colorless, hygroscopic, water- soluble compound which crystallizes in a sufficiently pure form of water transparent clear crystals of hexahydrate ( GdCl3 • 6 H2O ) results. The hexahydrate is monoclinic with space group P2 / n and two formula units per unit cell. The anhydrous form is present in a crystal structure with space group P63 / m.

Use

Gadolinium ( III) chloride is used in the synthesis and NMR investigations of paramagnetic GdPCTA and GdPCTA complexes with potential use as contrast agents for NMR.