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      Propriedades e aplicações de clusters trinucleares de carboxilatos de rutênio Translated title: Properties and applications of trinuclear ruthenium carboxylate clusters

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          Translated abstract

          A review with 94 references focusing on mu3-oxo-triruthenium carboxylate clusters is presented. The electronic, magnetic, electrochemical, and catalytic properties of these compounds are discussed. Main synthetic routes and structural characteristics, including their use as building blocks in supramolecular systems are described.

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          Direct imaging of zero-field dipolar structures in colloidal dispersions of synthetic magnetite.

          Albert P Philipse, Johannes D. Meeldijk, M Claesson … (2004)
          Magnetite (Fe3O4) forms the basis of most dispersions studied in the field of magnetic fluids and magnetic colloids. Despite extensive theory and simulations on chain formation in dipolar fluids in zero field, such structures have not yet been imaged in laboratory-made magnetite dispersions. Here, we present the first direct observation of dipolar chain formation in zero field in a ferrofluid containing the largest synthetic single-domain magnetite particles studied so far. To our knowledge, this is the only ferrofluid system available at present that allows quantifying chain length and ring-size distributions of dipolar structures as a function of concentration and particle size.
          Article 0 comments Cited 79 times – based on 0 reviews     Review now
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            Ligand-accelerated cross-coupling of C(sp2)-H bonds with arylboron reagents.

            Keary M Engle, Peter S Thuy-Boun, Michael Dang … (2011)
            A ligand-accelerated Pd(II)-catalyzed C(sp(2))-H/arylboron cross-coupling reaction of phenylacetic acid substrates is reported. Using Ac-Ile-OH as the ligand and Ag(2)CO(3) as the oxidant, a fast, high-yielding, operationally simple, and functional group-tolerant protocol has been developed for the cross-coupling of phenylacetic acid substrates with aryltrifluoroborates. This ligand scaffold has also been shown to improve catalysis using 1 atm O(2) as the sole reoxidant, which sheds light on the path forward in developing optimized ligands for aerobic C-H/arylboron cross-coupling.
            Article 0 comments Cited 68 times – based on 0 reviews     Review now
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              Noncovalently functionalized dendrimers as recyclable catalysts.

              Joost Reek, Hil G. E. Meijer, Albertus P. H. J. Schenning … (2001)
              The efficient reversible functionalization of the periphery of urea adamantyl poly(propylene imine) dendrimers with catalytic sites using noncovalent interactions is described. Phosphine ligands equipped with urea acetic groups, a binding motive complementary to that of the dendrimer host, have been prepared and assembled to the dendrimer support. The resulting supramolecular complex has been used as a multidentate ligand system in the palladium-catalyzed allylic amination reaction in a batch process and in a continuous-flow membrane reactor. We found that the activity and selectivity of the dendrimeric complex is similar to that of the monomer complex, which indicates that the catalytic centers act as independent sites. The size of the supramolecular system is sufficiently large and the binding of the guests is strong enabling a good separation of the catalyst components from the reaction mixture using nanofiltration techniques.
              Article 0 comments Cited 48 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): qn
                Title: Química Nova
                Abbreviated Title: Quím. Nova
                Publisher: Sociedade Brasileira de Química (São Paulo, SP, Brazil )
                ISSN (Print): 0100-4042
                ISSN (Electronic): 1678-7064
                Publication date (Print and electronic): December 2000
                Volume: 23
                Issue: 6
                Pages: 785-793
                Affiliations
                [01] São Paulo SP orgnameUniversidade de São Paulo orgdiv1Instituto de Química
                Article
                Publisher ID: S0100-40422000000600012 Publisher ID: S0100-4042(00)02300612
                DOI: 10.1590/S0100-40422000000600012
                SO-VID: bab1062d-de5e-4e4e-96c0-9ce70e967ecd
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date accepted : 16 March 2000
                Date received : 08 December 1999
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 94, Pages: 9
                Product

                SciELO Brazil

                Categories
                Subject: Revisão

                Keywords: oxo-ruthenium clusters,ruthenium-acetate clusters,catalysis,ruthenium-carboxylated clusters
                Data availability:
                Keywords: oxo-ruthenium clusters, ruthenium-acetate clusters, catalysis, ruthenium-carboxylated clusters

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