Dysprosium (II) chloride

Crystal structure
__ Dy 2+      __ Cl -
General
Surname	Dysprosium (II) chloride
other names	Dysprosium dichloride
Ratio formula	DyCl 2
Brief description	black solid
External identifiers / databases
CAS number 13767-31-2 Wikidata Q15628229
properties
Molar mass	233.41 g mol −1
Physical state	firmly
Melting point	721 ° C (decomposition)
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Dysprosium (II) chloride is an inorganic chemical compound of dysprosium from the group of chlorides .

Extraction and presentation

Dysprosium (II) chloride can be obtained by reducing dysprosium (III) chloride with dysprosium in a vacuum at 800 to 900 ° C.

${\displaystyle \mathrm {Dy+2\ DyCl_{3}\longrightarrow 3\ DyCl_{2}} }$

properties

Dysprosium (II) chloride is a black solid. 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 the strontium bromide type with the space group P 4 / n (space group no. 85) .

Individual evidence

1. ↑ ^{a b c d e} 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.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ Ulrich Müller: Symmetry Relationships between Crystal Structures: Applications of ... Oxford University Press, 2013, ISBN 0-19-164880-9 ( limited preview in the Google book search).