Thulium (II) chloride
Crystal structure | |||||||
---|---|---|---|---|---|---|---|
__ Tm 2+ __ Cl - | |||||||
General | |||||||
Surname | Thulium (II) chloride | ||||||
other names |
Thulium dichloride |
||||||
Ratio formula | TmCl 2 | ||||||
Brief description |
dark red solid |
||||||
External identifiers / databases | |||||||
|
|||||||
properties | |||||||
Molar mass | 239.84 g mol −1 | ||||||
Physical state |
firmly |
||||||
Melting point |
718 ° C |
||||||
safety instructions | |||||||
|
|||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Thulium (II) chloride is an inorganic chemical compound of thulium from the group of chlorides .
Extraction and presentation
Thulium (II) chloride can be obtained by reducing thulium (III) chloride with thulium in a vacuum at 800 to 900 ° C.
It can also be represented by the reaction of thulium with mercury (II) chloride .
properties
Thulium (II) chloride is a dark red solid that looks dark green as a powder. The connection is extremely hygroscopic and can only be stored and handled under carefully dried protective gas or in a high vacuum. In air or on contact with water, it changes into hydrates while absorbing moisture , but these are unstable and more or less quickly turn into oxide chlorides with evolution of hydrogen . The compound has a crystal structure of strontium iodide type.
Individual evidence
- ↑ a b c d e f Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 1081.
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.