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Synthesis And Characterization Of Two Eletron Platinum Reagents
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Book Synopsis Synthesis and Characterization of Two-eletron Platinum Reagents by :
Download or read book Synthesis and Characterization of Two-eletron Platinum Reagents written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of square planar platinum(II) complexes with the mer-coordinating tridentate ligand, pip & sub2;NCN & sup-; (pip & sub2;NCNH = 1,3?bis(piperdylmethyl) benzene) has been synthesized. The lowest emissive excited states of these complexes can be tuned by varying the properties of the monodentate ligand. Colorless halide complexes and the pyridine adduct exhibit weak red emissions originating from a lowest triplet ligand field (3LF) excited state. In contrast, yellow-green emissions from Pt(pip & sub2;NCN)(4-phenylpyridine))+; originate from a lowest 3TT?TT* state. Similarly, (Pt(pip & sub2;NCN))2(mƯL)2+; dimers exhibit emission from a lowest 3LF excited state (L=1,2-bis(4-pyridyl)ethane), a lowest 3TT-TT* excited state (L=trans-1,2-bis(4-pyridyl)ethylene or 4,4'-bipyridine) or a lowest triplet metal-to-ligand charge-transfer excited state (L=pyrazine), depending on the bridging ligand. A series of platinum(II) terpyridyl complexes with aryl ligands has been synthesized. The complexes undergo two one-electron reduction processes near -0.9 and -1.4 V vs. Ag/AgCl. In the cyclic voltammograms of complexes unsubstituted at the 2 and 6 positions of the aryl ligand, the first reduction exhibits larger (>59 mV) differences between the anodic and cathodic peak potentials than observed for complexes with methyl groups at the 2 and 6 positions. The accumulated data are consistent with the formation of dimers that reduce at different potentials than the monomers, causing the first reduction wave to appear broadened. Protection of the axial sites of the metal center appears to interfere with dimerization. 77 K glassy solution emission measurements confirm that steric effects can be utilized to control intermolecular metalʺʺʺmetal and ligandʺʺʺligand stacking interactions in solutions of these complexes. The first examples of platinum complexes that undergo reversible and cooperative thermal two-electron transfer have been prepared. The tpy ligand of Pt(tpy)(pip & sub2;NCN))+; is tridentate and the pip & sub2;NCN & sup-; ligand is monodentate, bonded through the central aryl group. Cyclic voltammograms of this complex exhibit two reversible oneƯelectron tpy-centered reductions and a nearly reversible two-electron platinum-centered oxidation at ""0.40 V vs. Ag/AgCl. Electrochemical studies of a series of model complexes establish that both potentially tridentate ligands are required for reversible two-electron transfer. A detailed analysis leads to the suggestion that the ligands preorganize around the platinum(II) center, resulting in a 5- or 6-coordinate electrochemically active species.
Book Synopsis Synthesis, Characterization, and Reactivity of New 16-electron Platinum(II) Propargyl Complexes by : David Glenn Schimpff
Download or read book Synthesis, Characterization, and Reactivity of New 16-electron Platinum(II) Propargyl Complexes written by David Glenn Schimpff and published by . This book was released on 1991 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Investigation of Pyrazole-containing Platinum Complexes for the Design of Macrocyclic Molecules and Potential Two-electron Reagents by : Stuart Alan Willison
Download or read book Synthesis and Investigation of Pyrazole-containing Platinum Complexes for the Design of Macrocyclic Molecules and Potential Two-electron Reagents written by Stuart Alan Willison and published by . This book was released on 2008 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed study involving platinum(II) compounds with bis-2,6-pyrazolyl-phenyl type ligands have been undertaken in an effort to design a new architecture for building macrocyclic molecules with potentially coordinating tridentate ligands. Initial reports focused on platinum complexes with 2,6-bis-pyrazolyl-pyridine ligands. One complex, Pt(bpp)Ph +, exhibited an intense pink emission of the solid at 77 K, which is one of the first examples of a luminescent platinum compound with a bis-pyrazolyl-pyridine ligand. Herein we report the investigation of steric influence to promote C-H activation on the formation of monomeric and macrocyclic platinum(II) complexes, using methyl substituents on a series of anionic bis-pyrazolyl-phenyl ligands. Further studies of concentrated reaction mixtures at long reaction times result in exclusively trimeric products, whereas more dilute mixtures and shorter reaction times give only monomer products. Thus, careful control of the reaction conditions allows for selective activation of C-H bonds on the ligand giving isolated products of expected monomers and trimers, as well as surprising new dimeric products. In the course of our investigations of the monomeric platinum(II) products, we have discovered that four complexes react with dithiocarbamate accelerators most commonly used in latex processing, giving a colored response. Thus, the platinum complexes can be used as colorimetric indicators to detect allergenic dithiocarbamate compounds in latex products. In addition, we describe the synthesis and preliminary characterization of a potential two-electron reagent using a monomeric complex, Pt(4)Cl, and pip 2NNN, where 4 is 1,3-bis(3,5-dimethylpyrazolyl)benzene and (pip 2NNN) is 2,6-bis(piperidylmethyl)pyridine, to give Pt(4)(pip 2NNN) +.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of [beta]-diiminate Complexes of Platinum (IV) and Gold (III) by : Jong Ho Kim
Download or read book Synthesis and Characterization of [beta]-diiminate Complexes of Platinum (IV) and Gold (III) written by Jong Ho Kim and published by . This book was released on 1980 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Synthesis and Characterization of Transition Metal Atom Cluseter Compounds Containing Platinum-germanium and Platinum-tin Bonds by : Frank DeSales McDonough
Download or read book The Synthesis and Characterization of Transition Metal Atom Cluseter Compounds Containing Platinum-germanium and Platinum-tin Bonds written by Frank DeSales McDonough and published by . This book was released on 1972 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Platinum (II) Complexes with Sulfur- and Nitrogen- Containing Ligands by : Jun Wen
Download or read book Synthesis and Characterization of Platinum (II) Complexes with Sulfur- and Nitrogen- Containing Ligands written by Jun Wen and published by . This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of New Platinum (ll) Compounds by : Guangyi Lu
Download or read book Synthesis and Characterization of New Platinum (ll) Compounds written by Guangyi Lu and published by . This book was released on 2007 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and characterization of platinum(II) complexes with thiophene-based ligands by : Julienne Sarabia
Download or read book Synthesis and characterization of platinum(II) complexes with thiophene-based ligands written by Julienne Sarabia and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Novel Platinum (II) Complexes by : Ruslan S. Pryadun
Download or read book Synthesis and Characterization of Novel Platinum (II) Complexes written by Ruslan S. Pryadun and published by . This book was released on 2004 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of a Bimetallic Platinum(II) Complex by : James William Gemin
Download or read book Synthesis and Characterization of a Bimetallic Platinum(II) Complex written by James William Gemin and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy, Simulation-training, Ocean Engineering, and Instrumentation by : Brian J. Thompson
Download or read book Energy, Simulation-training, Ocean Engineering, and Instrumentation written by Brian J. Thompson and published by University Rochester Press. This book was released on 2001 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains thirteen research papers reporting on the research results of the Link Foundation Fellows in Energy, Simulation-Training and Ocean Engineering and Instrumentation. The work covers a wide variety of research topics carried out at leading universities and colleges. Brian J. Thompson is Provost Emeritus of the University of Rochester
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Platinum(II) Complexes with Adamantantanamine Derivatives and Related Ligands by : Monique Doyon
Download or read book Synthesis and Characterization of Platinum(II) Complexes with Adamantantanamine Derivatives and Related Ligands written by Monique Doyon and published by . This book was released on 1991 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: "New platinum(II) complexes of the type (Pt(A$ sp prime$)Cl$ sb3 rbrack sp-$, Pt(A)(A$ sp prime$)Cl$ sb2$ and Pt(A)(A$ sp prime$)I$ sb2$, where A = methylamine, ethylamine, cyclobutylamine and cyclopentylamine and A$ sp prime$ = 1-adamantanamine, 2-adamantanamine and 1-methyladamantanamine have been synthesized. The structure of (2-adamH) (Pt(EtNH$ sb2$)Cl$ sb3$) complex has been determined by X-ray diffraction." --
Book Synopsis Synthesis and characterization of platinum(II) complexes from quinoline or pyridine functionalized benzothiophene ligands by : Leila Duman
Download or read book Synthesis and characterization of platinum(II) complexes from quinoline or pyridine functionalized benzothiophene ligands written by Leila Duman and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Platinum (II) Complexes with Diazine Ligands by : Julien Priqueler
Download or read book Synthesis and Characterization of Platinum (II) Complexes with Diazine Ligands written by Julien Priqueler and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: