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• W2088679949 endingPage "11998" @default.
• W2088679949 startingPage "11985" @default.
• W2088679949 abstract "Abstract The reaction of [CpRuCl(PPh 3 ) 2 ] (Cp=cyclopentadienyl) and [CpRuCl(dppe)] (dppe=Ph 2 PCH 2 CH 2 PPh 2 ) with bis‐ and tris‐phosphine ligands 1,4‐(Ph 2 PC≡C) 2 C 6 H 4 ( 1 ) and 1,3,5‐(Ph 2 PC≡C) 3 C 6 H 3 ( 2 ), prepared by Ni‐catalysed cross‐coupling reactions between terminal alkynes and diphenylchlorophosphine, has been investigated. Using metal‐directed self‐assembly methodologies, two linear bimetallic complexes, [{CpRuCl(PPh 3 )} 2 (μ‐dppab)] ( 3 ) and [{CpRu(dppe)} 2 (μ‐dppab)](PF 6 ) 2 ( 4 ), and the mononuclear complex [CpRuCl(PPh 3 )(η 1 ‐dppab)] ( 6 ), which contains a “dangling arm” ligand, were prepared (dppab=1,4‐bis[(diphenylphosphino)ethynyl]benzene). Moreover, by using the triphosphine 1,3,5‐tris[(diphenylphosphino)ethynyl]benzene (tppab), the trimetallic [{CpRuCl(PPh 3 )} 3 (μ 3 ‐tppab)] ( 5 ) species was synthesised, which is the first example of a chiral‐at‐ruthenium complex containing three different stereogenic centres. Besides these open‐chain complexes, the neutral cyclic species [{CpRuCl(μ‐dppab)} 2 ] ( 7 ) was also obtained under different experimental conditions. The coordination chemistry of such systems towards supramolecular assemblies was tested by reaction of the bimetallic precursor 3 with additional equivalents of ligand 2 . Two rigid macrocycles based on cis coordination of dppab to [CpRu(PPh 3 )] were obtained, that is, the dinuclear complex [{CpRu(PPh 3 )(μ‐dppab)} 2 ](PF 6 ) 2 ( 8 ) and the tetranuclear square [{CpRu(PPh 3 )(μ‐dppab)} 4 ](PF 6 ) 4 ( 9 ). The solid‐state structures of 7 and 8 have been determined by X‐ray diffraction analysis and show a different arrangement of the two parallel dppab ligands. All compounds were characterised by various methods including ESIMS, electrochemistry and by X‐band ESR spectroscopy in the case of the electrogenerated paramagnetic species." @default.
• W2088679949 created "2016-06-24" @default.
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• W2088679949 date "2009-11-02" @default.
• W2088679949 modified "2023-10-18" @default.
• W2088679949 title "Cyclopentadienyl Ruthenium(II) Complexes with Bridging Alkynylphosphine Ligands: Synthesis and Electrochemical Studies" @default.
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• W2088679949 doi "https://doi.org/10.1002/chem.200901642" @default.
• W2088679949 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19790213" @default.
• W2088679949 hasPublicationYear "2009" @default.
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