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Chromium carbonyl

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Identification
Molecular formula
Cr(CO)6
CAS number
13007-92-6
IUPAC name
carbon monoxide;chromium
State
State
At room temperature, chromium carbonyl is a solid. It tends to decompose slowly in air, releasing toxic carbon monoxide gas.
Melting point (Celsius)
150.00
Melting point (Kelvin)
423.15
Boiling point (Celsius)
103.00
Boiling point (Kelvin)
376.15
General information
Molecular weight
220.06g/mol
Molar mass
220.0620g/mol
Density
1.5900g/cm3
Appearence
Chromium carbonyl appears as a white crystalline solid that is known for being volatile and toxic. It can form clear solutions in organic solvents.
Comment on solubility

Solubility of Carbon Monoxide in Chromium

When considering the solubility of carbon monoxide (CO) in chromium (Cr), it's essential to note that these two substances exhibit unique behaviors as chemical entities. The solubility of gases in solids can be very limited, and carbon monoxide is no exception.

Key Points about Solubility:

  • Low Solubility: Carbon monoxide is known for its very low solubility in solid metals, including chromium. This means that only a minimal amount of CO can dissolve in the chromium lattice.
  • Temperature Dependence: The solubility of CO may slightly increase with rising temperatures, although this effect is not very pronounced in metals.
  • Pressure Influence: Under higher pressures, more carbon monoxide may dissolve, but again this might not lead to significant concentrations in solid chromium.
  • Potential Reactivity: Although CO may not be highly soluble, it can interact with chromium surfaces, altering their chemical and physical properties during reactions.

To summarize, while carbon monoxide's presence in solid chromium is characterized by its limited solubility, factors such as temperature and pressure can play a role in the dissolution process. Understanding these dynamics is crucial for various industrial and metallurgical applications.

Interesting facts

Interesting Facts about Carbon Monoxide and Chromium

Carbon monoxide (CO) and chromium are both fascinating substances that play significant roles in various chemical processes and applications.

Carbon Monoxide (CO)

Carbon monoxide is a colorless, odorless gas that is widely known for its toxic properties. Here are some intriguing facts about this compound:

  • Source of Toxicity: Carbon monoxide is produced from the incomplete combustion of fossil fuels. Common sources include vehicle emissions, gas appliances, and even certain types of camping stoves.
  • Binding Ability: Carbon monoxide binds with hemoglobin in the blood more effectively than oxygen does, forming carboxyhemoglobin and limiting the blood's ability to carry oxygen. This is what makes it a lethal poison.
  • Industrial Applications: Surprisingly, CO is also used in various industrial processes. It's a crucial reagent in the production of chemicals such as methanol and acetic acid, demonstrating its versatility beyond its toxic reputation.
  • Role in Astronomy: Carbon monoxide is an important molecule in space chemistry and is often detected in the interstellar medium. Its presence helps astronomers understand star formation and the dynamics of galaxies.

Chromium

Chromium is a transition metal known for its varied oxidation states and significant applications. Here’s what makes chromium noteworthy:

  • Essential Element: Chromium is an essential trace element for humans, playing a role in glucose metabolism and insulin sensitivity. However, too much exposure can lead to toxicity.
  • Versatile Applications: It is widely used in the manufacture of stainless steel, which contains at least 10.5% chromium. This addition protects steel from corrosion, and enhances its strength and durability.
  • Color and Pigments: Chromium compounds have vibrant colors and are used in various pigments. For example, chromium oxide gives green color, while chromium yellow is used in paints and dyes.
  • Environmental Concerns: Some chromium compounds, particularly hexavalent chromium, are highly toxic and are classified as carcinogenic. This has led to strict regulations and environmental remediation efforts in industries that employ chromium.

Together, carbon monoxide and chromium illustrate the complexity of chemical compounds and their dual nature, where they can be both beneficial and harmful depending on their form and application.

Synonyms
Chromium hexacarbonyl
CHROMIUM CARBONYL
Chromium(0) hexacarbonyl
Chromium carbonyl (Cr(CO)6), (OC-6-11)-
CHROMIUM CARBONYL [MI]
DTXSID6024830
CCRIS 3186
EINECS 235-852-4
UNII-920F3EJX2P
((pentakis(hydroxymethyl)chromio)methylidyne)-lambda3-oxidane
{[pentakis(hydroxymethyl)chromio]methylidyne}-lambda3-oxidane
Chromium carbonyl (OC-6-11)
DTXCID904830
Chromium carbonyl (OC-6-11) (9CI)
chebi:33031
hexacarbonylchromium
kotqlluqlxwwdk-uhfffaoysa-n
un3466
13007-92-6
carbon monoxide;chromium
Chromium carbonyl (Cr(CO)6)
SCHEMBL265473
920F3EJX2P
Chromium(0) hexacarbonyl, 98%
AKOS015903778
hexakis(methanidylidyneoxidanium) chromium
CS-0111881
NS00085875
D95847
EN300-7493636
Q421412
Chromium(0) hexacarbonyl, packaged for use in deposition systems