Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 70 for “"transition metal ions"”.
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Polarized Crystal Spectra of Transition-Metal Ions
Made available in DSpace on 2014-12-05T19:37:34Z (GMT). No. of bitstreams: 1 6100096.pdf: 2107522 bytes, checksum: ff03f082d9639a2a7974a824db55ad42 (MD5) Previous issue date: 1960
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Electronic structure of transition metal ions and clusters
… structure and reaction mechanisms of open-shell transition metal ions and clusters. The early part of the thesis (Chapters 2 and 3) is devoted to high-valent metal-oxo species, both mono- and bimetallic, while Chapter 4 describes some aspects of copper-catalysed carbon-carbon bond formation. …
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The Effect of Pressure on Energy Levels of Transition-Metal Ions
Made available in DSpace on 2014-12-05T17:15:37Z (GMT). No. of bitstreams: 1 6104411.pdf: 2725696 bytes, checksum: 2eac7f9092400f3c7d092f2e15e6c0f3 (MD5) Previous issue date: 1961
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A Study of the Chemistry of some Transition Metal Ions in Ceramic Glazes
… techniques in investigating the chemistry of transition metal ions in ceramic glazes is evaluated. Chapter three outlines the room temperature and liquid nitrogen temperature Mossbauer and magnetochemistry results for a number of Iron (III) dipyridyl complexes in order to evaluate the use of …
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Structural Studies of Halo and Aquohalo Complexes of First Row Transition-Metal Ions
Made available in DSpace on 2014-12-09T17:36:22Z (GMT). No. of bitstreams: 1 6915373.pdf: 3731607 bytes, checksum: e731fd3357028a31b14f18312322db9b (MD5) Previous issue date: 1969
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BINDING ENERGIES AND SOLVATION OF ORGANIC MOLECULAR IONS, REACTIONS OF TRANSITION METAL IONS WITH, AND PLASMA DISCHARGE IONIZATION OF MOLECULAR CLUSTERS
… growth mechanisms of carbon-containing molecular ions with relevance to astrochemistry. Ion mobility mass spectrometry and DFT computations were used to investigate how a second nitrogen in the pyrimidine ring will affect the formation of a covalent bond between the benzene radical cation and the …
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Synthesis, characterization and applications of complexes with transition metal ions in d6, d8 and d10 configuration, with nitrogen heterocyclic ligands containing pyridinic nuclei.
… focused on the synthesis, reactivity and applications of various nitrogen-containing heterocyclic ligands containing pyridine nuclei and their derivatives with transition metal ions, mainly in d8 configuration, including Pd(II), Pt(II) and Au(III). The ligands studied belong to the following …
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Coordination Phenomena in Non-Aqueous Solvents: I. A Coordination Model for Non-Aqueous Solution Behavior. Ii. Sulfoxide Coordination Compounds of Transition-Metal Ions
Made available in DSpace on 2014-12-05T19:37:57Z (GMT). No. of bitstreams: 1 6202939.pdf: 5142677 bytes, checksum: 388950d91d91d5590db98acb56f7a041 (MD5) Previous issue date: 1962
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Synthesis and Characterization of Polyaminopolycarboxylic Acid Analogs of EDTA and Their Transition Metal Complexes
… for their ability to complex with various transition metal ions. Polyaminopolycarboxylic acids are of particular interest due to their ability to form multiple chelate rings with transition metal ions. Three analogs of EDTA have been successfully synthesized and characterized by i3C NMR: …
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Use of Oximes and Schiff-bases as Bridging/Chelating Ligands with Select 3d and 3d/4f Ions in Cluster Chemistry and a Mechanistic Insight into the Roles of Transition Metal Ions in the Formation of Tetrazoles
… N-naphthalidine-2-amino-naphthol (nanpH2) in homometallic 3d- and heterometallic 3d/4f-metal cluster chemistry has afforded a Mn cluster and novel families of Mn/Ln and Cu/Ln complexes. In Chapter 2, the synthesis and characterization of the {MnIIIMnIV2} (1), {GdMnIV2} (2) and {DyMnIV2} (3) …
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Modified chalcogenide glasses for optical device applications
… sulphide (GLS) glasses. Firstly the addition of transition metal ions as dopants is examined and their potential for use as active optical materials is explored. It is also argued that the spectroscopic analysis of transition metal ions is a useful tool for evaluating the local environment of …
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Distribution of trace elements in olivines and proxenes - an experimental study
… to which trace amounts of the transition metal ions Cr³⁺, Fe²⁺, Mn²⁺, Co²⁺, Ni²⁺, and Cu²⁺ had been added. The resulting concentrations of the transition metal ions in the liquid and crystalline phases were determined using the electron microprobe. The results, given as free …
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Auf dem Weg zu photochromen supramolekularen Architekturen : Untersuchungen zu Synthese und Eigenschaften potentieller Bausteine
… was investigated; furthermore the influence of transition metal ions on the photochemical behaviour of the target molecules was studied.
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Characterization of the Electronic and Molecular Structures of Transition Metal Semiquinone and Catecholate Complexes
Quinones interact with transition metal ions in biological electron transfer processes such as photosynthesis and the respiratory electron transport chain. Two types of quinones exist, paraquinones and orthoquinones, however, only transition metal-orthoquinone complexes were studied. Orthoquinones …
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Measurement and kinetic analysis of complex ion-molecule reactions influenced by multiple electronic surfaces.
… resolved gas phase studies of ion-molecule reactions, particularly those featuring open-shell transition metal ions, are fundamental to understanding complex chemical reactivity paradigms that can help shed light on the behavior of bulk and extended materials. Kinetic studies are particularly …
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Two New Resorcinarenes: A Pyridine & Acetic Acid Ligand for Metal Coordination and a Deep-Cavity Nitroquinoxaline Resorcinarene
… upper-rim moieties as ligands for a variety of transition metal ions further increases the versatility of this class of host compounds. A new resorcinarene-based molecule functionalized with four pyridine and acetic acid ligands has been successfully prepared to explore the properties of …
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Luminescent decay and spectra of impurity-activated alkali halides under high pressure
… luminescence of alkali halides doped with the transition-metal ions Cu+ and Ag+ and the heavy-metal ions In+ and Tl+ was investigated to 140 kbar. Measurement of spectra allowed the prediction of kinetic properties, and the predictions agree with lifetime data. In view of the localized nature …
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Ab-initio study of cathode materials for lithium batteries
Using first principles calculations the effect of electronic structure on the stability of positive electrode materials for lithium rechargeable batteries is investigated. The investigation focuses upon lithiated α-NaFeO₂ type 3d transition metal oxide structures. It is found that the ligand field …
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