96616-80-7

Upstream product

• 881493-81-8 [(cod)Ir(3,5-bis((diphenylphosphino)methyl)pyrazolato)Rh(cod)]BF₄ 
• 201230-82-2 carbon monoxide 
• 96532-20-6 [Ir₂(C₈H₁₂)2(C₃HN₂(CH₂P(C₆H₅)2)2)]⁽¹⁺⁾*BF₄^(1-)*CH₃OH=[Ir₂(C₈H₁₂)2(C₃HN₂(CH₂P(C₆H₅)2)2)]BF₄*CH₃OH 

Downstream Products

• 881914-01-8 (CO)Ir(3,5-bis((diphenylphosphino)methyl)pyrazolato)Ir(CO)(μ-CC-p-tol) 
• 881914-02-9 (CO)Ir(3,5-bis((diphenylphosphino)methyl)pyrazolato)Ir(CO)(μ-CCSiMe3) 

Relevant academic research and scientific papers

Synthesis of a library of iridium-containing dinuclear complexes with bridging PNNN and PNNP ligands (BL), [LM(μ-BL)M′L′]BF 4. 2. Preparation, basic coordination properties, and reactivity of the carbonyl complexes

A series of dinuclear carbonyl complexes with PNNP and PNNN ligands, [(L)M(PNNX)M′(L)]BF4 (X = P, N; M(L), M′(L′) = Ir(CO)2, Rh(CO)2, Pd(allyl)), have been prepared by carbonylation (1 atm) of the corresponding cod complexes, and the Rh/Ir complexes have been further converted to μ-η1: η2-acetylide complexes, where effective π-back-donation to the acetylide ligand is essential to stabilize them. On the basis of the stability of the acetylide complexes, the π-donating ability of the metal fragment in the PNNX system is estimated to be (P,N)Rh > (P,N)Ir > (N,N)M. The dinuclear PNNX complexes catalyze alkyne hydrogenation, alkene hydroformylation, and allylation of aniline with allyl alcohol, and, for the allylation, a dinuclear mechanism involving activation of allyl alcohol by interaction with a CO ligand is proposed.

Bimetallic reactivity. Synthesis of bimetallic complexes containing a bis(phosphino)pyrazole ligand

The ligand PNNHP has been prepared. It is a planar quadridentate ligand consisting of a central pyrazole unit with symmetrically disposed methylenediphenylphosphine arms, and its geometry provides for two metals to reside within cooperative distance but does not allow for metal-metal bond formation. Two types of planar bimetallic complexes have been isolated and characterized: those with anionic bridging groups (X) of the composition [M2(PNNP)(X)L2] (M = Pd(II), X = Cl, L = Cl; M = Rh(I), X = Cl and PPh2, L = CO; M = Ir(I), X = PPh2, L = CO) and those without bridging atoms of the composition [M2(PNNP)L4]+ (M = Pd(II), 2L = π-allyl; M = Rh(I) and Ir(I), 2L = diene and L = CO) have been identified.