Chemical Name: Chromium hexacarbonyl
IUPAC Name: Carbon monoxide; chromium
CAS No.: 13007-92-6
EINECS: 235-852-4
RTECS: GB5075000
RTECS Class: Tumorigen ;  Mutagen
EC Class: Carcinogenic
Molecular Formula: C₆CrO₆
Molecular Weight: 220.05 g/mol
Melting Point: >150 °C (dec.)(lit.)
Water Solubility: Insoluble
Sensitive: Light Sensitive/Heat Sensitive
Following is the structure of Hexacarbonylchromium (13007-92-6):

Product Categories about Hexacarbonylchromium (13007-92-6) are Catalysis and Inorganic Chemistry ; Chemical Synthesis ; Chromium ; Organic intermediates
The chemical synonymous of Hexacarbonylchromium (13007-92-6) are (Oc-6-11)-Chromiumcarbonyl ; (Oc-6-11)-Chromiumcarbonyl(Cr(CO)₆ ; Chromcarbonyl ; Chromium Carbonyl (Cr(CO)₆) ; Chromium Carbonyl (Cr(CO)₆), (Oc-6-11)- ; Chromiumcarbonyl(Cr(CO)₆) ; Chromiumcarbonyl(Cr(CO)₆),(Oc-6-11)- ; Chromiumcarbonyl(Oc-6-11)

IARC Cancer Review: Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 , 1980,p. 205.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Chromium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Confirmed carcinogen with experimental tumorigenic data. Poison by ingestion and intravenous routes. Mutation data reported. Explodes at 210°C. See also CHROMIUM COMPOUNDS and CARBONYLS.
Analytical Methods:      
For occupational chemical analysis use NIOSH: Chromium Hexavalent 7024.
Hazard Codes:
F: Flammable
N: Dangerous for the environment
Risk Statements about Hexacarbonylchromium (13007-92-6):
R49 May cause cancer by inhalation. 
R20/21/22 Harmful by inhalation, in contact with skin and if swallowed. 
R43 May cause sensitization by skin contact. 
R44 Risk of explosion if heated under confinement. 
R50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
Safety Statements about Hexacarbonylchromium (13007-92-6):
S53 Avoid exposure - obtain special instructions before use. 
S36/37 Wear suitable protective clothing and gloves. 
S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). 
S60 This material and its container must be disposed of as hazardous waste. 
Attention:
1. Storage: Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.
2. Handling: Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Store protected from light.
3. In common with many of the other homoleptic metal carbonyls (e.g. nickel carbonyl and iron carbonyl), chromium hexacarbonyl is toxic and thought to be carcinogenic. Its vapor pressure is relatively high for a metal complex, 1 mm Hg ( 36 °C).

OSHA PEL: CL 0.1 mg(CrO₃)/m³
ACGIH TLV: TWA 0.05 mg(Cr)/m³; Confirmed Human Carcinogen
DFG MAK: DFG TRK: Confirmed Animal Carcinogen with Unknown Relevance to Humans
NIOSH REL: (Chromium(VI)) TWA 0.001 mg(Cr(VI))/m³

For occupational chemical analysis use NIOSH: Chromium Hexavalent 7024.

 Hexacarbonylchromium (13007-92-6) is the chemical compound with the formula Cr(CO)₆. At room temperature the solid is stable to air, although it does have a high vapor pressure and sublimes readily. Cr(CO)₆ is zerovalent, meaning that Cr has a formal charge of zero, and it is called a homoleptic complex, which means that all the ligands are the same. The complex is octahedral with Cr-C and C-O distances of 1.92 and 1.17 Å, respectively.When heated or photolyzed in tetrahydrofuran (THF) solution, Cr(CO)₆ converts to Cr(CO)₅(THF) with loss of one CO ligand. Similarly, heating a solution of Cr(CO)₆ in an aromatic solvent results in replacement of three CO ligands:
Cr(CO)₆ + C₆H₅R → Cr(CO)₃(C₆H₅R) + 3 CO
Such reactions proceed particularly well with electron-rich arenes such as anisole, either as the neat reagent or using a mixture of THF and dibutyl ether, the latter to increase the boiling point of the mixture. The products adopt a "piano-stool" structure. These species are typically yellow solids, which dissolve well in common organic solvents. The arene can be liberated from the chromium with iodine or by photolysis in air. In general, substituted derivatives of Cr(CO)₆ decompose upon exposure to air.
Alkyl and aryl organolithium reagents RLi add to a carbonyl ligand to give anionic acyl complexes.These species react with alkylating agents such as Me₃O+ to form (OC)₅Cr=C(OMe)R, an example of a Fischer carbene. If the R group is a vinyl or an aryl group, then the resulting carbene complex can react with an acetylene to form a new benzene ring to which is bonded the chromium tricarbonyl fragment. The two acetylene carbon atoms become part of the new ring, as does a carbon from one of the carbonyl ligands. Also the three carbons from the vinyl carbene become part of the new benzene ring.