Triosmium dodecacarbonyl

Structural formula
General
Surname	Triosmium dodecacarbonyl
other names	Didecacarbonyl triosmium
Molecular formula	Os 3 (CO) 12
Brief description	yellow solid
External identifiers / databases
CAS number 15696-40-9 EC number 239-789-3 ECHA InfoCard 100.036.157 PubChem 519165 Wikidata Q2491361
properties
Molar mass	906.73 g mol −1
Physical state	firmly
density	3.48 g cm −3
Melting point	224 ° C
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 301-330 P: 260-301 + 310-304 + 340-320-330-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Triosmium dodecacarbonyl is a chemical compound of osmium from the group of metal carbonyls .

Extraction and presentation

Triosmium dodecacarbonyl can be obtained by reacting osmium tetroxide with carbon monoxide .

${\displaystyle \mathrm {3\ OsO_{4}+24\ CO\longrightarrow Os_{3}(CO)_{12}+12\ CO_{2}} }$

It can also be produced as an accessory metal by high pressure carbonylation of osmium halides or oxyhalides in the presence of copper or silver powder.

properties

Triosmium dodecacarbonyl is a yellow, crystalline, slightly air-sensitive, volatile solid that is only soluble in very polar organic solvents .

The thermal decomposition of triosmium dodecacarbonyl (Os ₃ (CO) ₁₂ ) yields osmium carbonyl clusters with a higher nucleus such as Os ₄ (CO) ₁₃ via Os ₆ (CO) ₁₈ to Os ₈ (CO) ₂₃ .

Individual evidence

1. ↑ ^{a b c d} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1832.
2. ↑ ^{a b c d e f} Data sheet Triosmiumdodecacarbonyl, 99% from AlfaAesar, accessed on September 12, 2013 ( PDF )(JavaScript required) .
3. ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , pp. 1780-1822.