123526-67-0

Basic information

• Product Name: (C₅H₅)2Nb(CO){P(C₆H₅)2Cr(CO)5}
• CAS NO: 123526-67-0
• Molecular Weight: 628.339
• Mol File: 123526-67-0.mol

Chemical Properties

• CAS DataBase Reference: (C₅H₅)2Nb(CO){P(C₆H₅)2Cr(CO)5}(CAS DataBase Reference)
• NIST Chemistry Reference: (C₅H₅)2Nb(CO){P(C₆H₅)2Cr(CO)5}(123526-67-0)
• EPA Substance Registry System: (C₅H₅)2Nb(CO){P(C₆H₅)2Cr(CO)5}(123526-67-0)

Safety Data

• Hazardous Substances Data: 123526-67-0(Hazardous Substances Data)

Upstream product

• 15038-41-2 pentacarbonyl(tetrahydrofuran)chromium⁽⁰⁾ 

Relevant articles and documents

Terminal and bridged diphenyl phosphido complexes derived from nioboceneand Group 6 metal carbonyls (Cr, Mo, W). Structures of Cp2Nb(L)(μ-PP h2)Cr(CO)5, S (L=CO, S=CH3COCH3; L=P(OMe)3, S=C6H5CH3)

New terminal monophosphido complexes derived from bent niobocene Cp2Nb(L)PPh2(L=P(OMe)3, PMe2H) have been prepared by a procedure described aerlier for Cp2Nb(CO)PPh2. These metallophosphines have been used to bind the M(CO)5 (M = Cr, Mo, W) fragments. The expected dimetallic monobridged complexes of the type Cp2Nb(L)(μPPh2)M(CO)5 (L=CO, P(OMe)3, PMe2H; M = Cr, Mo, W) are formed. When L=CO the dibridged compounds Cp2Nb(μ-PPh2)(μ-CO)M(CO)4 (M = Cr, W) are also obtained. All new mono- and dimetallic complexes have been characterized by (1)H and (31)P NMR and IR spectroscopies. X-ray diffraction studies of solvated Cp2Nb(CO)(μ-PPh2)Cr(CO)5 and Cp2Nb(P(OMe)3)(μ-PPh2)Cr(CO)5 indicate that the metallic centers in both complexes are tethered by a single bridge. The large Nb-P-Cr angles (125.94(8) and 129.11(5)°, respectively) and the longNb-Cr distances (4.653(1) and 4.7575(9)?, respectively) clearly sho w the absence of metal-metal interaction.