76586-43-1

Basic information

• Product Name: Co₂(CO)6(As(C₆H₅)3)2
• Synonyms: Co₂(CO)6(As(C₆H₅)3)2
• CAS NO: 76586-43-1
• Molecular Weight: 898.526
• Mol File: 76586-43-1.mol

Chemical Properties

• CAS DataBase Reference: Co₂(CO)6(As(C₆H₅)3)2(CAS DataBase Reference)
• NIST Chemistry Reference: Co₂(CO)6(As(C₆H₅)3)2(76586-43-1)
• EPA Substance Registry System: Co₂(CO)6(As(C₆H₅)3)2(76586-43-1)

Safety Data

• Hazardous Substances Data: 76586-43-1(Hazardous Substances Data)

Upstream product

• 603-32-7 triphenyl-arsane 
• 15226-74-1 dicobalt octacarbonyl 

Downstream Products

• 14878-28-5 sodium tetracarbonyl cobaltate 
• 603-32-7 triphenyl-arsane 
• 138766-49-1 Co((CH₃)3Sn)(CO)3As(C₆H₅)3 

Relevant articles and documents

Characterization of the Solid-Solid Phase Transition of Co2(CO)6(AsPh3)2

The dimeric Co2(CO)6(AsPh3)2 molecule contains an unsupported Co-Co bond, axial arsines, and equatorial carbonyls. At room temperature, the molecule crystallizes in the R3? space group [a = 15.73(3) ?14.240- (2) ?] packing in chains along c which are hexagonally arranged in the ab plane. When the temperature is lowered, no significant changes are found in the molecular structure until a second-order phase transition [Tc = 206(3) K] occurs by doubling the c axis [at T = 123 K a = 15.233(4) ?, c = 28.440(6) ?, space group R3?]. The major molecular conformational changes related to the phase transition are the rotations of Co(CO)3 and AsPh3 fragments about the 3-fold axes and those of the phenyls about their As-C bond. X-ray studies at 16 different temperatures have been performed in order to describe the details of the small continuous structural changes that occur in the low-temperature phase.