79361-89-0

Basic information

• Product Name: (η-5C5H5)Ni(dppe)
• Synonyms: (η-5C5H5)Ni(dppe)
• CAS NO: 79361-89-0
• Molecular Weight: 522.209
• Mol File: 79361-89-0.mol

Chemical Properties

• CAS DataBase Reference: (η-5C5H5)Ni(dppe)(CAS DataBase Reference)
• NIST Chemistry Reference: (η-5C5H5)Ni(dppe)(79361-89-0)
• EPA Substance Registry System: (η-5C5H5)Ni(dppe)(79361-89-0)

Safety Data

• Hazardous Substances Data: 79361-89-0(Hazardous Substances Data)

Upstream product

• 69239-97-0 (C₅H₅)(P(C₆H₅)3)Ni(CH₂COC(CH₃)3) 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 
• 14647-23-5 1,2-bis(diphenylphosphino)ethane nickel(II) chloride 
• 1271-28-9 nickelocene 
• 15628-25-8 Ni⁽⁰⁾(1,2-bis(diphenylphosphino)ethane)2 
• 14647-21-3 dibromo[1,2-bis(diphenylphosphino)ethane]nickel(II) 

Downstream Products

• 1271-28-9 nickelocene 

Relevant articles and documents

CYCLOPENTADIENYLNICKEL COMPLEXES

The neutral complexes (η5-C5H5)NiXL (X = Cl, L = PPh3 (I); L = PCy3 (II); X = Br, L = PPh3 (III); L = PCy3 (IV); X = I, L = PPh3 (V); L = PCy3 (VI)) have been obtained by treatting NiX2L2 with thallium cyclopentadienide.The same reaction in the presence of TlBF4 gives cationic derivatives 5-C5H5)NiL2>BF4 (L = 2PPh2Me (VII); L = dppe (VIII)), whereas mononuclear complexes containing two different ligands (L2 = PPh3 + PCy3 (IX)) or dinuclear 5-C5H5)Ni(PPh3)>2dppe>(BF4)2 (X) are obtained from the reaction of III with TlBF4 in the presence of a different ligand.Reduction of cationic complexes with Na/Hg gives very unstable nickel(I) derivatives (η5-C5H5)NiL2, which could not be isolated purely.Similar reduction of neutral complexes under CO gives a mixture of decomposition products containing 5-C5H5)Ni(CO)>2 and nickel(0) carbonyls, whereas in the presence of acetylenes, dinuclear 5-C5H5)Ni>2(RCCR') (R = R'= Ph; R = Ph, R' = H) are obtained.

Synthesis and reactions of nickel and palladium carbon-bound enolate complexes

Nickel and palladium carbon-bound enolates of the general formula η5-C5R5(Ph 3P)MCHR′COR″ (R = H, CH3; R′ = H, CH3; R″ = t-Bu, Ph, O-t-Bu) were prepared. Cp*(Ph3P)NiCH2CO2-t-Bu (1e) was characterized by X-ray diffraction. Compound 1e crystallizes in the monoclinic space group P21/n with unit-cell dimensions a = 13.6110 (20) A?, b = 12.7454 (13) A?, c = 17.8571 (23) A?, β = 105.544 (11)°, Z = 4, observed data 4091, R = 4.53%, and Rw = 4.19%. Reactions of these nickel and palladium enolates with aldehydes and other electrophilic reagents were examined. The nickel ketone enolates were shown to react with 2 equiv of benzaldehyde to deliver products resulting from a Tischtschenko-type oxidation/reduction process. Cp(Ph3P)NiCH2CO-t-Bu reacts with phosphines (L) to yield paramagnetic nickel(I) complexes of general formula Cp(L)2Ni.