16787-33-0

Basic information

• Product Name: (CO)2Ni(P(C₂H₅)3)2
• Synonyms: (CO)2Ni(P(C₂H₅)3)2
• CAS NO: 16787-33-0
• Molecular Weight: 351.029
• Mol File: 16787-33-0.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: (CO)2Ni(P(C₂H₅)3)2(CAS DataBase Reference)
• NIST Chemistry Reference: (CO)2Ni(P(C₂H₅)3)2(16787-33-0)
• EPA Substance Registry System: (CO)2Ni(P(C₂H₅)3)2(16787-33-0)

Safety Data

• Hazardous Substances Data: 16787-33-0(Hazardous Substances Data)

Upstream product

• 13463-39-3 tetracarbonyl nickel 
• 554-70-1 triethylphosphine 
• 95841-39-7 Ni(CH₃)(OC₆H₄CN)(P(C₂H₅)3)2 
• 95910-33-1 Ni(CH₃)(OC₆H₅)(P(C₂H₅)3)2 
• 1295-35-8 bis(1,5-cyclooctadiene)nickel ⁽⁰⁾ 
• 103-71-9 phenyl isocyanate 
• 613-90-1 benzoyl cyanide 
• 51320-65-1 tetrakis(triethylphosphine)nickel⁽⁰⁾ 
• 79299-48-2 Ni(CH₃)(OC₆H₄C₆H₅)(P(C₂H₅)3)2 
• 637-27-4 phenyl propionate 

Relevant articles and documents

CARBONYLATION OF CYANO(PHENYL)BISLIGAND-NICKEL(II) COMPLEXES AND RELATED REACTIONS OF BENZOYL CYANIDE WITH NICKEL(O) COMPLEXES

Carbonylation of the complexes Ni(CN)(C6H5)(P)2 (P=P(C2H5)3; P(cyclo-C6H11)3; 0.5(C2H5)2P-(CH2)4-P(C2H5)2) affords the acyl-derivatives Ni(CN)-(COC6H5)(P)n (n=1,2) which, in the presence of excess CO, undergo reductive elimination of C6H5COCN.It has been

NICKELA-HETERORINGE AUS NICKEL(0) UND PHENYLISOCYANAT

Phenylisocyanate reacts with (Lig)Ni0 systems in various ways depending on the ligand (Lig).Thus, with TMEDA as ligand, headtail linkage of the isocyanates occurs to give the nickela-5-ring (II), whereas triethylphosphine ligand causes the formation of a nickela-6-ring (V).The structure of II was determined chemically and that of V by X-ray analysis.The properties of these novel cyclic nickela compounds are described and the reaction courses are discussed.

Oxidative Addition of Aryl Carboxylates to Ni(0) Complexes Involving Cleavage of the Acyl-O Bond

Reactions of aryl carboxylates RCOO-p-C6H4X (R=CH3, C2H5, n-C3H7; X=H, CH3, OCH3, CN) with bis(1,5-cyclooctadiene)nickel, Ni(cod)2, in the presence of phosphine ligands yield olefin (R(-H)), p-XC6H4OH, and nickel carbonyl complex(es) when the R group has a β hydrogen, whereas CH4, C2H6, nichel carbonyl complex(es), and nickel phenoxide are formed when the R group is CH3.The formation of the products is accounted for by assuming oxidative addition of the ester to nickel involving the cleavage of the acyl-O bond of RCOO-p-C6H4X followed by decarbonylation of the acylnickel complex and decomposition of the alkylnickel complex: RCOO-p-C6H4X + NiLn -> RCONiLnOC6H4X -> RNiLnOC6H4X + CO.The intermediate alkyl(phenoxo)nickel-type complex NiCH3(OC6H5) was in fact isolated in the reaction of phenyl acetate with Ni(cod)2 in the presence of 2,2'-bipyridine.The rate of the reaction is first order with respect to the concentration of the zerovalent nickel complex and the pseudo-first-order rate constant increases with with the increase in the basicity of the phosphine ligand added and with the increase of the electron-withdrawing ability of X.On the basis of these results a mechanism involving a nucleophilic attack at the carbonyl carbon by nickel is proposed.The activation parameters for the reaction of C2H5COOC6H5 with the mixture of Ni(cod)2 and PPh3 are ΔH=21+/-2 kcal/mol, ΔS=-8.8+/-2.9 eu.