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Terpyridine Ligands (terpyridine + ligand)
Selected AbstractsA Concise Modular Synthesis of 2,5-Diethynyl-3,4-dibutyl-thiophene-Bridged Back-to-Back Terpyridine Ligands.CHEMINFORM, Issue 38 2003Celine Ringenbach No abstract is available for this article. [source] Di-,-chlorido-bis[chlorido(4,- p -tolyl-2,2,:6,,2,,-terpyridine-,3N,N,,N,,)nickel(II)]: a supramolecular system constructed by C,H...Cl interactionsACTA CRYSTALLOGRAPHICA SECTION C, Issue 7 2009Ying-Lin Chen The title complex, [Ni2Cl4(C22H17N3)2], was synthesized solvothermally. The molecule is a centrosymmetric dimer with the unique NiII centre in a distorted octahedral N3Cl3 coordination environment. The chloride bridges are highly asymmetric. In the 4,- p -tolyl-2,2,:6,,2,,-terpyridine ligand, the p -tolyl group is perfectly coplanar with the attached pyridine ring, and this differs from the situation found in previously reported compounds; however, there are no ,,, interactions between the ligands. The terminal Cl atom forms four intermolecular C,H...Cl hydrogen bonds with one methyl and three methine groups. The methyl group also forms intermolecular C,H..., interactions with a pyridine ring. These nonclassical hydrogen bonds extend the molecule into a three-dimensional network. [source] Metal-Assisted Hybridization of Oligonucleotides, Evaluation of Circular 2,- O -Me RNA as Ligands for the TAR RNA TargetEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 6 2003Laurence Zapata Abstract Two complementary oligonucleotides were conjugated with terpyridine ligands at their nearby 5,- and 3,-ends. Addition of a stoichiometric amount of a transition metal (Zn2+, Fe2+) resulted in a large increase in the melting temperature of the duplex. The conjugation of TPY to stem-loop oligomers provided an efficient procedure for the cyclisation of the oligomer after the addition of metal ions. Such a short stem-loop oligomer was designed to target the HIV-1 TAR RNA through loop,loop interactions. The addition of Zn2+ ions yielded a good ligand (Kd = 30 nM) for this RNA structural element. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003) [source] Side-chain terpyridine polymers through atom transfer radical polymerization and their ruthenium complexesJOURNAL OF POLYMER SCIENCE (IN TWO SECTIONS), Issue 20 2005Nikos P. Tzanetos Abstract Polymers containing side-chain terpyridine ligands of well-defined architectures and controllable molecular weights and molecular weight distributions are reported. These polymers were synthesized by the atom transfer radical polymerization (ATRP) of a newly synthesized terpyridine monomer with three functional initiators. The obtained polymers were characterized with 1H NMR and gel permeation chromatography techniques. The efficiency of the ATRP technique and the overall control of the molecular characteristics of the polymers were demonstrated by a kinetic study of the polymerization reaction. Subsequently, the ruthenium(III)/ruthenium(II) complexation chemistry was employed for the attachment of bis(dodecyloxy)-functionalized terpyridine moieties onto each side 2,2,:6,,2,-terpyridine unit of the main polymeric backbone. Thus, the grafting approach was successfully combined with the metal,ligand coordination chemistry for the preparation of highly soluble polymeric complexes. The resulting complexes were fully characterized by means of 1H NMR, gel permeation chromatography, and ultraviolet,visible spectroscopy. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 4838,4848, 2005 [source] Synthesis of ,-conjugated oligomer that can form metallo polymersJOURNAL OF POLYMER SCIENCE (IN TWO SECTIONS), Issue 22 2002Abdelkrim El-Ghayoury Abstract An oligo(p -phenylene vinylene) that contains terpyridine ligands has been synthesized. Upon addition of metal ions, a ,-conjugated metallo polymer is formed in which the well-defined character of oligomers and the material properties of polymers are combined. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 4020,4023, 2002 [source] | ||||||||||