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Showing 1 to 13 of 13 for “"Di-2-Pyridyl"”.
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REDUCTIVE ELIMINATION OF (DPMS)PTIV COMPLEXES DERIVED FROM ISOMERIC 2-BUTENEs AND 2-BUTYNE (DPMS=DI(2-PYRIDYL)METHANE SULFONATE)
The (dpms)PtII complexes (dpms = di(2-pyridinyl)methanesulfonate)derived from some cyclic olefins can be readily oxidized to PtIV oxetanes, followed by reductive elimination to produce corresponding epoxides. A catalytic version of this reaction can potentially be achieved if decomposition of …
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Synthesis and characterization of metal complexes 2-Benzoylpyridene and di-2-pyridyl ketone schiff base ligands derived from s-methyldithiocarbazate fragment and its application to biological activity toward P.Falciparum
… and biological evaluation of 2-benzoylpyridine-s-methyldithiocarbazate (HL1) and di-2-pyradylketone-s-methyldithiocarbazate (HL2) with selected metal ions of copper (II), zinc (II), cadmium (II), nickel (II), iron (II) and cobalt (II). The ligands, HL1 and HL2 were synthesized by an acid …
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NEW ORGANOMETALLIC COMPLEXES WITH PHOTOLUMINESCENT AND NON LINEAR OPTICAL PROPERTIES
… emitters for Organic Light Emitting Diodes (OLEDs). In particular, various platinum(II) complexes with a cyclometallated 1,3-di(2-pyridyl)benzene ligand seem very promising in this respect because they are highly emissive. These observations prompted us to prepare new cyclometallated …
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Diels -Alder reactions of [60]fullerene with 1,2,4,5-tetrazines and additions to [60]fullerene-tetrazine monoadducts
<p>The Diels-Alder reaction between [60]fullerene and 1,2,4,5-tetrazines was studied. Under conditions of total darkness, [60]fullerene reacts with tetrazines to form bicyclic intermediates which immediately extrudes nitrogen to yield C2nu symmetric monoadducts. Thus, 3,6-diphenyl and 3,6-di-(2 …
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Synthesis and characterisation of ligand-bridged tungsten and chromium penta- and tetra-carbonyl complexes
… or chromium and L is either trans-l,2-(bis-4-pyridyl)ethylene(TBE) or 3,6-di-2-pyridyl-l,2,4,5-tetrazine (DPT) have been synthesised. They were characterised using IR, UV-Vis and NMR, MS, TLC and microanalysis. Electronic spectral studies showed that both the dinuclear, [4(CO)CrDPTCr(CO)4] and …
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New luminescent iridium (III) complexes containing NCN cyclometallated ligands: synthesis, photophysical properties and emission tuning
The luminescence properties of cyclometallated iridium(III) complexes render them of interest, for example, as phosphorescent dopants in organic light-emitting devices (OLEDs), as photoactive units in solar energy conversion, and as biosensors. The vast majority comprise three bidentate ligands, …
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Metal complexes with ligand-tethered organo-hydride donor groups - new prospects for efficient multi-electron reduction
… to N-heterocyclic carbene (NHC) ligands of rhodium(I) were found to oxidatively add to the proximal, low-valent rhodium center to afford both monomeric rhodium(III) and dimeric rhodium(II) complexes of a novel bidentate bis(NHC) ligand in which both a pyridylidene and imidazolylidine NHC donor …
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Study of the ligand effects on the metal-ligand bond in some new organometallic complexes using FT-Raman and -IR spectroscopy, isotopic substitution and density functional theory techniques
The present studies which have been performed in the work-group C-2 (Prof. W. Kiefer) within the program of the Sonderforschungsbereichs 347, deal with the FT-Raman and –IR spectroscopy on new organometallic complexes, synthesized in the work-groups B-2 (Prof. W. Malisch), B-3 (Prof. W. A. Schenk), …
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Electrocatalysts for the reduction of dioxygen and carbon dioxide
… improved activity and economic viability. Building on the prior ORR success of a carbon-supported binuclear copper complex of 3,5-diamino-1,2,4-triazole, the first section of this thesis focuses on four copper complexes built from structurally similar ligands which were synthesized and examined …
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Synthese, Stereochemie und pharmakologische Charakterisierung von 3,7-Diazabicyclo[3.3.1]nonan Derivaten als selektive kappa-Agonisten
In der vorliegenden Arbeit wird die Synthese von verschiedenen bicyclischen Substanzklassen gemäß des folgenden Syntheseschemas beschrieben. Es wurden verschiedene 2,4-di-(2-pyridyl)- oder 2,4-di-(3-fluorphenyl)-substituierte 9-Oxo-3,7-diazabicyclo[3.3.1]nonan-1,5-dicarbonsäurediester (9-Oxo-BNDS: …
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NEW NCN-PLATINUM(II) COMPLEXES WITH LUMINESCENT PROPERTIES
… ligand with the general scaffold of a 1,3-di(2-pyridyl)benzene and were designed following different strategies: i) Complexes PtCl1-PtCl7 have unsubstituted pyridines and different groups in position 5 of the benzene ring, i.e. a mesityl, a triphenylamine, a pyrenyl, a phenyl-carbazole, a …
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Metallierung, oxidative C-C-Kupplung und C-N-Aktivierung mit Zinkorganyl-Verbindungen
Ein Ziel dieser Arbeit war es, die Zugänglichkeit von geminalen Bis(alkylzink)imiden zu untersuchen. Verbindungen des Typs (RZn)2NR´ wurden bereits in der Literatur[33][34] als Polymerisationskatalysator erwähnt, jedoch nicht strukturell erfasst. In Kapitel 2.1 ist die Zinkierung primärer Amine mit …
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EMISSIVE PEPTIDE NUCLEIC ACIDS (PNAS): POTENTIAL TOOLS FOR INNOVATIVE DIAGNOSTICS AND THERAPEUTICS
… Thanks to their synthetic nature, PNAs also display high chemical and enzymatic stability3. All these unique features make PNAs excellent candidates for diagnostic and therapeutic applications4,5, such as detecting genetic mutations and interfering with protein production in antigene and …