The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1,2-Bis(diphenylphosphino)ethane, is researched, Molecular C26H24P2, CAS is 1663-45-2, about Revising the chemistry of κ2-dppe-closo-RuC2B9H11 fragment: Synthesis of novel diamagnetic complexes and its transformations, the main research direction is ruthenium carborane phosphine complex preparation haptotropic rearrangement; redox reaction potential ruthenium carborane phosphine complex; atom transfer radical polymerization catalyst ruthenium carborane phosphine complex; methyl methacrylate polymerization atom transfer radical catalyst ruthenium carborane.Recommanded Product: 1663-45-2.
A novel facile way of synthesis of closo-ruthenacarboranes with chelate 1,2-bis(diphenylphosphino)ethane (dppe) with high yields was proposed. It was found that the interaction of the three-bridged 5,6,10-{Cl(Ph3P)2Ru}-[5,6,10-(μ-H)3-10-H-exo-nido-7,8-C2B9H10] (1) with dppe in acetonitrile or CH2Cl2/acetonitrile mixture leads to the formation of novel diamagnetic ruthenacarborane cluster 3-CNMe-3,3-[κ2-dppe]-closo-3,1,2-RuC2B9H11 (2) along with some amount of ionic compound [trans-(CH3CN)RuCl(dppe)2]+[C2B9H12]- (3) which may be also converted to 2 increasing its total yield. The reaction of 2 bearing divalent ruthenium with carbon tetrachloride or HCl gives the known 17-electron paramagnetic complex 3-Cl-3,3-[κ2-dppe]-closo-3,1,2-RuC2B9H11 (4). The detailed investigation of the previously described method of synthesis of 4 from 3-H-3-Cl-3,3-(PPh3)2-closo-3,1,2-RuC2B9H11 (5) allowed us to characterize the forming byproducts as 3-PPh3-3,3,8-[Ph2P(CH2)2PPh-μ-(C6H4-o)-closo-3,1,2-RuC2B9]H10 (6) and 3-[κ1-dppe]-3,3-[κ2-dppe]-closo-3,1,2-RuC2B9H11 (7). The obtained ruthenacarborane clusters undergo reversible Ru(II)/Ru(III) transition. It was shown that the complexes 2, 4 and 6 show good activity as catalysts for Atom Transfer Radical Polymerization of Me methacrylate.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis