12278-67-0

Basic information

• Product Name: (η6-benzene)dicarbonyl(triphenylphosphine)chromium(0)
• Synonyms: (η6-benzene)dicarbonyl(triphenylphosphine)chromium(0)
• CAS NO: 12278-67-0
• Molecular Weight: 448.421
• Mol File: 12278-67-0.mol

Chemical Properties

• CAS DataBase Reference: (η6-benzene)dicarbonyl(triphenylphosphine)chromium(0)(CAS DataBase Reference)
• NIST Chemistry Reference: (η6-benzene)dicarbonyl(triphenylphosphine)chromium(0)(12278-67-0)
• EPA Substance Registry System: (η6-benzene)dicarbonyl(triphenylphosphine)chromium(0)(12278-67-0)

Safety Data

• Hazardous Substances Data: 12278-67-0(Hazardous Substances Data)

Upstream product

• 931-88-4 cis-Cyclooctene 
• 697302-50-4 (benzene)tricarbonylchromium 
• 75503-66-1 acetonitrile-η6-(benzene)dicarbonylchromium(0) 
• 12154-75-5 C₆H₆Cr(CO)2(cyclopentene) 
• 12155-93-0 C₆H₆Cr(CO)2(C₆H₅CCC₆H₅) 
• 131736-93-1 [Cr(CO)2(PPh3)(η6-C6H6)](1+) 
• 33503-15-0 C₆H₆Cr(CO)2NCC₆H₅ 

Downstream Products

• 86801-97-0 C₆H₆Cr(CO)2P(C₆H₅)3(Hg(CH₃COO)2) 
• 97687-28-0 (C₆H₆)CrAlBr₃(CO)2(P(C₆H₅)3) 
• 97687-41-7 (C₆H₆)CrGaCl₃(CO)2(P(C₆H₅)3) 

Relevant articles and documents

Characterization and reactions of previously elusive 17-electron cations: Electrochemical oxidations of (C6H6)Cr(CO)3 and (C5H5)Co(CO)2 in the presence of [B(C6F5)4]

The electrochemical oxidations of (C6H6)Cr(CO)3, 1, and (C5H5)Co(CO)2, 2, when carried out in CH2Cl2/[NBu4][B(C6F5)4], allow the physical or chemical characterization of the 17-electron cations 1+ and 2+ at room temperature. The generation of 1+ on a synthetic time scale permits an electrochemical switch process involving facile substitution of CO by PPh3 as a route to (C6H6)Cr(CO)2PPh3. The radical 2+ undergoes a second-order reaction to give a product assigned as the metal-metal bonded dimer dication [Cp2Co2(CO)4]2+. The new anodic chemistry of these often-studied 18-electron compounds is made possible by increases in the solubility and thermal stability of the cation radicals in media containing the poorly nucleophilic anion [B(C6F5)4]-, TFAB. Copyright

Restricted metal-arene and phosphorus-carbon bond rotation in (arene)Cr(CO)2L complexes (L = PPh3, P(o-tolyl)3)

(1,4-Di-tert-butylbenzene)Cr(CO)2PPh3 exhibits restricted arene-Cr bond rotation in solution (ΔG?203 = 31.6 kJ mol-1). A series of (arene)Cr(CO)2P(o-tolyl)3 complexes have been prepared which exhibit restricted P-C rotation in solution; in cases where planar chirality is present, diastereoisomers may be observed which differ in the helicity of the exo2 phosphine conformation. Diastereoisomer interconversion and o-tolyl ring exchange occur with very similar activation energies. Crystal structure data: (1,4-di-tert-butylbenzene)Cr(CO)2PPh3, monoclinic, space group P21/n, a = 10.137(1) A?, b = 13.992(2) A?, c = 20.882(3) A?, β = 96.16(2)°, Z = 4, Rw = 9.18% for 345 refined parameters and 3643 observed reflections; (p-xylene)Cr(CO)2P(o-tolyl)3, monoclinic, space group P21/n, a = 8.552(1) A?, b = 17.410(2) A?, c = 17.558(2) A?, β = 91.95(2)°, Z = 4, Rw = 9.96% for 317 defined parameters and 3392 observed reflections; (benzene)Cr-(CO)2P(m-tolyl)3, monoclinic, space group P21/n, a = 11.120(3) A?, b = 11.227(1) A?, c = 20.289(4) A?, β = 100.63(2)°, Z = 4, Rw = 6.49% for 299 defined parameters and 3127 observed reflections.