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Showing 1 to 12 of 12 for “"Oxoanions"”.
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Recognition of Cations and Anions by Lanthanide Complexes
Transition metal cations and oxoanions are involved in many biological and environmental processes. Biologically, these ions have roles in aging and in the pathogenesis of a wide variety of disorders including neurodegenerative diseases such as Alzheimer’s and Parkinson’s, inflammation, reperfusion …
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Photochemistry of metalloporphyrins
… Their important roles in the reduction of oxoanions such as nitrite and sulfite in bacteria and in the oxidation of organic substrates by cytochrome P450 has prompted our current investigations into the photochemistry of several metalloporphyrin oxoanion complexes. The use of photochemistry …
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Syntheses and structures of some polyoxomolybdates and polyoxotungstates
… class of polyoxometalates. In solutions of oxoanions of the early transition metals - in particular molybdates and tungstates - an enormous variety of compounds can be formed by linking together metal-oxide building blocks. In this dissertation we investigated the host-potential of some …
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Novel dianionic sulfur ylides and related compounds
… the thesis was to replace oxygen atoms in sulfur oxoanions SOnm– or imido groups in sulfur polyimido anions S(NR)nm– isoelectronically by R2C-methylene groups. This would open a wide avenue to new target molecules containing a formally double bonded carbon next to formally double bonded nitrogen …
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Formylated dipyrromethane based phosphate derivatives receptors
… reorganization in order to accommodate the bound oxoanions both in chloroform solution and in the solid state are also provided. In Chapter 4, an electroactive analogue of the systems, discussed in Chapter 3, along with a new binding-site-enriched analogue are presented. These analogues exploit …
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Formylated dipyrromethane based phosphate derivatives receptors
… reorganization in order to accommodate the bound oxoanions both in chloroform solution and in the solid state are also provided. In Chapter 4, an electroactive analogue of the systems, discussed in Chapter 3, along with a new binding-site-enriched analogue are presented. These analogues exploit …
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Synthesis, characterization and high pressure propene oligomerization over heteropoly acids, SAPO-11 molecular sieves and MeAPSO-11 molecular sieves
… acids consist of high molecular weight poly-oxoanions, counter cations and water of hydration and are strongly acidic. The following salts of 12-tungstophosphoric acid, a 12-type HPA with the Keggin anion structure, were synthesized: AI, Fe, Ce, Ni, Co, Cu, K and NH₄, as well as the AI and …
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The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites
… for arsenic, selenium, molybdenum, and tungsten oxoanions by immobilizing zirconium on the phosphonic acid modified SPC (BPAP). The oxo-anions of these metals bind to the net positive charge on the zirconium, thereby removing them from the wastewater stream and reducing the metal concentrations …
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The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites
… for arsenic, selenium, molybdenum, and tungsten oxoanions by immobilizing zirconium on the phosphonic acid modified SPC (BPAP). The oxo-anions of these metals bind to the net positive charge on the zirconium, thereby removing them from the wastewater stream and reducing the metal concentrations …
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Guanidinium Compounds: Synthesis, Oxoanion Binding, and Cellular Delivery
… the binding affinities of the guanidines to oxoanions through NMR titration experiments, which were hampered by changing ionic strength of the solutions. Appendices describe the synthesis of photocaged phosphinothioesters for the traceless Staudinger ligation and attempts to install a diazo …
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Auxiliary proton-influenced metal-mediated reactions: dioxygen activation, anion coordination, and catalysis
… coordinatively unsaturated [Cp*Ir(TsDPEN)]+ for oxoanions (H2PO4–), unlike its Ru congener, [(p-cymene)Ru(OPO3H2)(TsDPEN)]+ that was found to coordinate the dihydrogenphosphate anion. Catalyst degradation is proposed to proceed via protonation of the tosylamido ligand, as was established by the …