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Preparation and characterization of novel poly(alkylidenamine) nitrile ruthenium metallodendrimers
Complete functionalization of N,N,N?,N?-[tetrakis(cyanoethyl)- hexamethylenediamine] [N=C(CH2)2]2N(CH 2)6N[(CH2)2-C=N]2 (4) and N,N,N’,N’-[tetrakis(cyanoethoxypropyl)hexamethylenediamine] [N=C(CH 2)2O(CH2)3]2N(CH 2)6N[(CH2)3-O(CH2) 2C=N]2 (7) with the organometallic moiety [Ru(eta5-C5H5)(PPh3) 2Cl] and the five-coordinate cis-[RuCl(dppe)2]-[PF 6] [dppe = 1,2-bis(diphenylphosphanyl)ethane] was attained, with good yield, respectively, by treating the metallofragment with the core in methanol (at room temperature and in presence of T1PF6 as a chloride abstractor) and in 1,2-dichloroethane (under reflux). These novel nitrile-functionalized poly(alkylidenamine) dendrimers peripherally functionalized with the ruthenium moieties [Ru(eta5-C 5H5)(PPh3)2]+ and [RuCl(dppe)2]+ (8-11) were fully characterized by NMR (1H, 13C, 31P), TOF-MS and FTIR. The present results represent a step forward in the knowledge of the most adequate synthetic strategy for total coordination of poly(alkylidenamine) nitrile core derivatives to the different ruthenium complex moieties and confirm the versatility of these systems as building blocks in metallodendrimer chemistry.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of: Chlorocyclopentadienylbis(triphenylphosphine)ruthenium(II). In my other articles, you can also check out more blogs about 32993-05-8
Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI