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New Organometallic Complexes Of Technetium In Different Oxidation Statessynthesis Properties And Structures In Correlation With The Homologous Compounds Of Manganese And Rhenium In German
Download New Organometallic Complexes Of Technetium In Different Oxidation Statessynthesis Properties And Structures In Correlation With The Homologous Compounds Of Manganese And Rhenium In German full books in PDF, epub, and Kindle. Read online New Organometallic Complexes Of Technetium In Different Oxidation Statessynthesis Properties And Structures In Correlation With The Homologous Compounds Of Manganese And Rhenium In German ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis NEW ORGANOMETALLIC COMPLEXES OF TECHNETIUM IN DIFFERENT OXIDATION STATES:SYNTHESIS, PROPERTIES AND STRUCTURES IN CORRELATION WITH THE HOMOLOGOUS COMPOUNDS OF MANGANESE AND RHENIUM. (IN GERMAN). by : J. E. Joachim
Download or read book NEW ORGANOMETALLIC COMPLEXES OF TECHNETIUM IN DIFFERENT OXIDATION STATES:SYNTHESIS, PROPERTIES AND STRUCTURES IN CORRELATION WITH THE HOMOLOGOUS COMPOUNDS OF MANGANESE AND RHENIUM. (IN GERMAN). written by J. E. Joachim and published by . This book was released on 1993 with total page 0 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 1994-06 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal-metal Multiply Bonded Complexes of Technetium. Final Report by :
Download or read book Metal-metal Multiply Bonded Complexes of Technetium. Final Report written by and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this project was to explore and develop the area of technetium metal-metal multiple bond chemistry. At the outset of the project, examples of metal-metal multiply bonded complexes of technetium were primarily limited to those supported by halide and carboxylate ligands. As a result, we intended to significantly expand the number of complexes containing Tc-Tc multiple bonds using ligands other than carboxylates or halides. In order to achieve this goal, the results obtained from years of dirhenium research was used as a guide for the development of new technetium compounds. Our emphasis, however, was on pursuing unanticipated results and exploiting the inherent differences between technetium and rhenium in order to develop chemistry beyond that which exists for rhenium. We have focused our attention on the preparation of dinuclear complexes with ligand sets that are known to support dinuclear metal-metal bonded cores in a variety of different metal oxidation states. Investigation of the consequences of electron addition and removal from metal-metal bonding manifold on the structural and physical properties of such dinuclear species will provide vital information regarding the electronic structure of Tc-Tc multiply bonded compounds.
Book Synopsis Synthesis, Characterization, and Reactivity of Technetium and Rhenium Complexes in Intermediate Oxidation States by : Harvey Stewart Trop
Download or read book Synthesis, Characterization, and Reactivity of Technetium and Rhenium Complexes in Intermediate Oxidation States written by Harvey Stewart Trop and published by . This book was released on 1979 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel High Oxidation State Complexes of Rhenium and Technetium with Multidentate Nitrogen, Sulfur and Oxygen Donor Ligands by : Hanelie Janien Adendorff
Download or read book Novel High Oxidation State Complexes of Rhenium and Technetium with Multidentate Nitrogen, Sulfur and Oxygen Donor Ligands written by Hanelie Janien Adendorff and published by . This book was released on 1993 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Complexes of Thiophene Derivatives as Potential Metallomesogens by : Mary Solly Thomas
Download or read book Complexes of Thiophene Derivatives as Potential Metallomesogens written by Mary Solly Thomas and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study involves the synthesis and structural characterization of new metal complexes of thiophene derivatives that have (potential) liquid crystalline properties. Thiophene has been selected because of its stability and versatility in lending itself to synthetic modification and hence forms links in chain structures for rod-like metallomesogens. Thiophene, when compared with 1,4-disubstituted benzene units, can change considerably the polarity, polarizability and also the geometry of the compounds, altering the types of mesophases, phase transition temperatures, dielectric constants and other properties of mesogens. The reactions of a series of 5-alkyl-2-thiophenedithiocarboxylates with nickel(II) chloride formed two types of complexes, blue mononuclear nickel(II) complexes with two terminal dithiocarboxylate ligands, [Ni(S2CTR)2] (T = 2,5-disubstituted thiophene) and violet mononuclear nickel(II) complexes with perthio- and dithiocarboxylate ligands, [Ni(S3CTR)(S2CTR)] (R = alkyl groups). The blue monomers are preferred for the shorter alkyl chains (C4 and C6), and the violet compounds for the longer chain lengths (C8, C12 and C16) in the alkylthiophene complexes. In addition to the above series, [Ni(S2CTCH3)2], was prepared in a one-pot reaction and it was possible to isolate both the blue and violet products. The thermal properties of the complexes were studied by using differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). Nickel complexes of the violet type with longer alkyl chains showed liquid crystalline properties. Zinc(II) complexes analogous to nickel(II) complexes prepared similarly. A crystal structure determination of one of those complexes revealed the fusion of two monomers to give a dimeric structure with bridging sulfur atoms, [Zn2 (?? -S2CTR) 2 (S2CTR) 2]. Although an irregular melting pattern was observed, the complexes did not show any liquid crystalline properties. In an attempt to extend the study towards organometallic compounds, complexes of the type [Re(CO) 4 (S2CTR)] or [Re(CO) 4 (S2CTTR)] (T = 2,5-disubstituted thiophene, TT = 2,5-disubstituted bithiophene: R = H, CH3, C14H29) were synthesized and characterized by IR and NMR spectroscopy. Further characterization of [Re(CO) 4 (S2CTTH)] by single crystal X-ray diffraction confirmed the molecular structure of the complexes. These compounds showed sharp single melting points. Fischer-type carbene complexes of manganese(I) with octahedral coordination of the type [MnMeCp(CO) 2{C(OEtTR)}] or [MnMeCp(CO) 2{C(OEtTTR)}] (R = H, C6H13, C12H25, C16H33) were synthesized and characterized by IR, NMR and mass spectrometry. Thermal properties of the complexes were studied by using thermogravimetric analysis (TGA). All the organometallic rhenium(I) and Fischer-type carbene complexes of manganese(I) showed weight loss upon heating due to decomposition. Therefore it can be assumed that these complexes are not suitable as liquid crystals.
Book Synopsis Metals in Biology by : Graeme Hanson
Download or read book Metals in Biology written by Graeme Hanson and published by Springer. This book was released on 2010-03-11 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal ions in biology is an ever expanding area in science and medicine involving metal ions in proteins and enzymes, their biosynthesis, catalysis, electron transfer, metal ion trafficking, gene regulation and disease. While X-ray crystallography has provided snapshots of the geometric structures of the active site redox cofactors in these proteins, the application of high resolution EPR spectroscopy in conjunction with quantum chemistry calculations has enabled, in many cases, a detailed understanding of a metalloenzymes mechanism through investigations of the geometric and electronic structure of the resting, enzyme-substrate intermediates and product complexes. This volume, Part II of a two-volume set demonstrates the application of high resolution EPR spectroscopy in determining the geometric and electronic structure of active site metal ion centers in iron sulfur cluster containing metalloproteins, mononuclear molybdenum metalloenzymes, manganese-containing enzymes and novel metalloproteins.
Book Synopsis Dithiolene Chemistry by : Edward I. Stiefel
Download or read book Dithiolene Chemistry written by Edward I. Stiefel and published by John Wiley & Sons. This book was released on 2004-01-16 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Progress in Inorganic Chemistry series provides inorganic chemistry with a forum for critical, authoritative evaluations of advances in every area of the discipline. Volume 52, Dithiolene Chemistry: Synthesis, Properties, and Applications continues this forum with a focus on dithiolene chemistry and a significant, up-to-date selection of papers by internationally recognized researchers. Dithiolene complexes have a remarkable set of properties, a fact which has made them the object of intense study for new materials and sensors.
Download or read book Metallofoldamers written by Galia Maayan and published by John Wiley & Sons. This book was released on 2013-01-18 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallofoldamers are oligomers that fold into three-dimensional structures in a controlled manner upon coordination with metal ions. Molecules in this class have shown an impressive ability to form single-handed helical structures and other three-dimensional architectures. Several metallofoldamers have been applied as sensors due to their selective folding when binding to a specific metal ion, while others show promise for applications as responsive materials on the basis of their ability to fold and unfold upon changes in the oxidation state of the coordinated metal ion, and as novel catalysts. Metallofoldamers: From Helicates to Biomimetic Architectures describes the variety of interactions between oligomers and metal species, with a focus on non-natural synthetic molecules. Topics covered include: the major classes of foldamers and their folding driving force metalloproteins and metalloenzymes helicates: self-assembly, structure and applications abiotic metallo-DNA metallo-PNA and iDNA metallopeptides interactions of biomimetic oligomers with metal ions applications of metallofoldamers
Book Synopsis Computational Molecular Spectroscopy by : Per Jensen
Download or read book Computational Molecular Spectroscopy written by Per Jensen and published by John Wiley & Sons. This book was released on 2000-11-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the use of modern computational methods in predicting high resolution molecular spectra, which allows the experimental spectroscopist to interpret and assign real spectra. * Offers a comprehensive treatment of modern computation techniques. * Provides a collection of material from different areas of theoretical chemistry and physics. * Bridges the gap between traditional quantum chemistry and experimental molecular spectroscopy.
