Hexacarbonylchromium

• Catalog No.: 13061
• CAS Number: 13007-92-6
• M. F.: C6CrO6
• M. W.: 220.0567
• Purity: 99%

SYNONYMS

• Title: 六羰基铬
• IUPAC name: hexakis(methanidylidyneoxidanium) chromium
• IUPAC Traditional name: hexakis(carbon monoxide) chromium
• Synonyms: Chromium carbonyl; Chromium hexacarbonyl

DATABASE IDS

• EC Number: 235-852-4
• MDL Number: MFCD00010945
• CAS Number: 13007-92-6

PROPERTIES

• TSCA Listed: 是
• Hazard Class: 6.1
• UN Number: UN3466
• Packing Group: III
• GHS Hazard statements: H301-H331
• European Hazard Symbols: X
• GHS Precautionary statements: P210-P280F-P304+P340-P310
• Risk Statements: 20/22-44
• RTECS: GB5075000
• Safety Statements: 9-36-60
• Storage Warning: Light Sensitive
• Purity: 99%
• Apperance: Crystalline
• Density: 1.77
• Melting Point: ca 152°C dec.

REFERENCES

• On heating with benzene derivatives readily forms (arene)Cr(CO)₃ complexes, which are often stable, crystalline solids: J. Chem. Soc., 551 (1959). Complex formation is retarded by the presence of electron-withdrawing or bulky substituents. The strongly electron-withdrawing nature of the Cr(CO)₃ group itself activates the aromatic system to metallation, nucleophilic attack, and can also activate side-chain substituents, e.g. to deprotonation. For examples of reactions, see: Encyclopedia of Reagents for Organic Synthesis, L. A. Paquette, Ed., Wiley, Chichester (1995), vol. 4, p. 2633.
• Reaction with organolithiums gives Fischer carbene complexes: Chem. Ber., 101, 954 (1968); Org. Synth. Coll., 8, 216 (1993). These react with alkynes to give ɑ-naphthol chromium tricarbonyl complexes (Dotz reaction): Angew. Chem. Int. Ed., 14, 644 (1975); 23, 587 (1984). For an example, see: Org. Synth. Coll., 9, 1 (1998):
  
• For discussion of the mechanism of the Dotz reaction, see: Organometallics, 14, 1492 (1998); 15, 2590 (1999).