85454-59-7

Basic information

• Product Name: [((C₆H₅)3P)2N]⁽¹⁺⁾*[Ta(CO)6]^(1-)=[((C₆H₅)3P)2N][Ta(CO)6]
• CAS NO: 85454-59-7
• Molecular Weight: 887.599
• Mol File: 85454-59-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [((C₆H₅)3P)2N]⁽¹⁺⁾*[Ta(CO)6]^(1-)=[((C₆H₅)3P)2N][Ta(CO)6](CAS DataBase Reference)
• NIST Chemistry Reference: [((C₆H₅)3P)2N]⁽¹⁺⁾*[Ta(CO)6]^(1-)=[((C₆H₅)3P)2N][Ta(CO)6](85454-59-7)
• EPA Substance Registry System: [((C₆H₅)3P)2N]⁽¹⁺⁾*[Ta(CO)6]^(1-)=[((C₆H₅)3P)2N][Ta(CO)6](85454-59-7)

Safety Data

• Hazardous Substances Data: 85454-59-7(Hazardous Substances Data)

Upstream product

• 15602-40-1 sodium hexacarbonyltantalate*THF 
• 21050-13-5 bis(triphenylphosphine)iminium chloride 

Relevant articles and documents

Studies on carbonyl derivatives of early transition elements. A convenient method for the preparation of the [Nb(CO)6]- anion at atmospheric pressure and room temperature. Crystal and molecular structure of [M(CO)6]- (M = Nb, Ta) as their bis(triphenylphosphine)nitrogen(1+) derivatives

A new method is reported for the preparation of [Nb(CO)6]- and [Ta(CO)6]- by reductive carbonylation of M2Cl10 (M = Nb, Ta) with the magnesium-zinc-pyridine-CO system. In the case of niobium, the reductive carbonylation occurs at atmospheric pressure and room temperature with yields as high as 48%. The tetrahydrofuran-stabilized sodium derivatives [Na(THF)][M(CO)6] and the bis(triphenylphosphine)nitrogen(1+) derivatives, PPN[M(CO)6] (M = Nb, Ta), are reported. The crystal and molecular structures of both niobium and tantalum PPN[M(CO)6] complexes are described. Both compounds are isostructural with the corresponding vanadium derivative: rhombohedral, space group R3, one molecule per cell; M = Nb, a = 9.832 (4) ?, α = 91.98 (5)°, V = 948.7 (7) ?3, ρcalcd = 1.399 g cm-3, R = 0.0391; M = Ta, a = 9.814 (4) ?, α = 92.02 (8)°, V = 943.4 (7) ?3, ρcalcd = 1.562 g cm-3, R = 0.0294 (Mo Kα, λ = 0.710 69 ?). The geometry of the two hexacarbonylmetalates is that of an almost perfect octahedron. Chemical and spectroscopic comparisons of the three [M(CO)6]- (M = V, Nb, Ta) anions are made.