Hafnium (II) hydride

from Wikipedia, the free encyclopedia
Crystal structure
Crystal structure of hafnium (II) hydride
__ Hf 2+      __ H -
Crystal system

cubic

Space group

Fm 3 m (No. 225)Template: room group / 225

General
Surname Hafnium (II) hydride
other names

Hafnium dihydride

Ratio formula HfH 2
Brief description

gray-black powder

External identifiers / databases
CAS number 12770-26-2
EC number 235-812-6
ECHA InfoCard 100.032.543
PubChem 159457
ChemSpider 52085100
Wikidata Q27252486
properties
Molar mass 180.5 g mol −1
Physical state

firmly

density

11.4 g cm −3

Melting point

> 400 ° C

solubility

Insoluble in water

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 228-261-302 + 312 + 332-319-335
P: 210-223-231 + 232-240-241-261-280-301 + 312-304 + 340-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Hafnium (II) hydride , HfH 2 is the divalent salt of the transition metal hafnium from the group of hydrides .

properties

Hafnium (II) hydride is isostructural with titanium dihydride . It crystallizes in a cubic crystal system with the space group Fm 3 m (space group no. 225) . In the presence of oxygen , the compound ignites at 190 ° C. Template: room group / 225

Individual evidence

  1. a b c d e f g Datasheet Hafnium Hydride from AmericanElements, accessed on June 1, 2019 ( PDF )
  2. Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 3322 .