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Key statement: The present invention is directed to a rubber composition comprising: a functionalized elastomer comprising: a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and a functional group bonded to the backbone chain, the functional group comprising a multidentate ligand capable of complexing with a metal ion; and a metal ion.
In order to investigate if the compound is a multidentate ligand with varying combinations of donor atoms, we report the crystal structure of the title compound.
Key statement: The present invention is directed to a rubber composition comprising: a functionalized elastomer comprising a polymeric backbone chain derived from a monomer comprising at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer; and a functional group bonded to the backbone chain, the functional group comprising a multidentate ligand capable of complexing with a metal ion; and an encapsulated metal salt.
+e observed irreversibility is common in Co(III) prodrugs with multidentate ligands and is likely due to a chemical change in the structure of 2 that occurs after reduction to Co(II) [37-39].
MacroacyclicSchiff-base complexes based on transition metals and multidentate ligands are an interesting chemical field and have been the subject of extensive research due to their potential applications in fields of magnetochemistry, material science, catalysis, separation and ncapsulation processes, hydrometallurgy, formation of compounds with unusual properties and metalmetal interactions [8-25].
carboxylic acids and carboxylates are mainly responsible for this chelation in large number of mono and multidentate ligands. These compounds can be synthesized and, by observing the positions, shapes and displacements of their characteristic absorption bands around 1800 and 1600 [cm.sup.-1], can predict possible coordination mode.
The Tuesday afternoon session focussed on [pi]-conjugated poly metallacyclopent adienes, supramolecular organomanganese coordination polymers, cationic iron azobenzene-substituted polymers, highly metallized PFSs containing cobalt clusters as lithographic resists, the electrochemical behaviour of organoiron and ruthenium polymers, oligo-phenylazomethine derivatives as multidentate ligands, dizinc 1,3-dicarboxylate clusters with nitrogen coordinating ligands, conjugated metallopolymers as chemically tunable electrical conductors and luminescent materials and iridium polymers as oxygen sensors.
Studies of multidentate ligands have experienced a tremendous upsurge because such ligands mimic the environment of metal ions in biological systems [1].
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