Global ETD Search
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Showing 1 to 8 of 8 for “"Tin compounds."”.
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Some uses of tin compounds in organic synthesis.
… the dissertation is concerned mainly with organo-tin chemistry. In the first part, I describe the investigation of the stereochemistry of intramolecular electrophilic attack on a tin-carbon bond. The react ion of a number of cS - and � -s tanny 1 a lcoho 1 s and 0-stannyl acid chlorides was …
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The chemistry of some heteroaryltin compounds.
… series of previously unreported heteroaryl organotin compounds bearing thienyl and furyl substituents, where the heteroaryl group is bound to tin via a heteroaromatic ring carbon atom. In particular, compounds bearing, respectively, two and three heteroaryl groups were of greater interest, as …
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Abiotic pathways of mercury methylation in the aquatic environment
… methyl iodide, methycobalamine and methyl tin compounds with mercury. Reaction of mercuric ions with methyl iodide yields HgI+ and HgI2 as inorganic products and MeOH as the only organic product. The reaction kinetics are biphasic and the reaction rate decreases with pH, increases with …
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AN INVESTIGATION OF THE FEASIBILITY OF BIOMETHYLATION FOR GROUP IV METALS AND COMPOUNDS
Methylmetal compounds are more toxic than their inorganic counterparts. The process of environmental methylation of some toxic metals and metalloids has been briefly reviewed. Group IV metals (Sn, Pb) have found widespread industrial use in recent years. Use of lead and organolead chemicals has …
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Fast atom bombardment and electron impact mass spectrometry studies of some aryltin compounds and ferrocenes
Both El MS and FAB MS behavior of two groups of compounds, aryltin and ferrocene compounds, have been studied. For the aryltin compounds, the effect of substituent group position, substituent group type and ligand type on the El spectra have been explored in the El MS studies. The fragmentation …
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Phosphorrückgewinnung bei der Abwasserreinigung : Entwicklung eines Verfahrens zur Integration in kommunale Kläranlagen
… (wwtp) and can easily be integrated into existing wwtps. The first step of the PRISA process is the feeding of the pre-thickener with excess sludge of a wwtp with enhanced biological phosphorus removal. This thickener is operated with a longer hydraulic retention time and the sludge is mixed …
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Catalisadores heterogêneos a base de heteropoliácidos e estanho para produção de biodiesel
A obtenção de biodiesel via reações de esterificação vem se tornando cada dia mais viável, pois existe uma grande quantidade de ácidos graxos livres presentes em rejeitos industriais, domésticos ou gorduras animais. Entretanto é necessária a busca por novos catalisadores que promovam as reações de …