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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 3867 for “"BIS"”.
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Substituierte Erdalkalimetall-bis(pentolide) und –bis(trialkylzinkate)
… erweckt das Gebiet der Erdalkalimetallbis( pentolide) erst seit einigen Jahren das Interesse einiger Arbeitsgruppen. Westerhausen et al. konnten vor einigen Jahren bei der Umsetzung von Diphenylbutadiin mit Calcium- und Strontium-bis[bis(trimethylsilyl)phosphanid] die Bildung von …
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NOVEL ETHYLENE-BRIDGED HEXADENTATE BIS(AMIDINES), BIS(AMIDINATES), AND MULTINUCLEAR COINAGE METAL BIS(AMIDINE) COMPLEXES
<p>A new series of hexadentate flexible bis(amidine) ligands (<strong>L<sup>1–6</sup></strong>H<sub>2</sub>) and the multinuclear coinage metal complexes <strong>1</strong>–<strong>5</strong> of <strong>L<sup>4</sup></strong>H<sub>2</sub> were synthesized and characterized. The synthesis of<strong> …
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Synthetic routes to asymmetrical Alkylenediimidosulfites and Novel Heteroarene-linked Bis-diimidosulfinates and Bis-triimidosulfonates
… class of compounds were synthesised: the aryl-bis-(diimidosulfinates). In this compounds two SN2 units are connected via a heteroaromatic linker, containing a potential donor centre in metal coordination. They represent, like the known alkyldiimidosulfinates, dipodal monoanionic ligands. In the …
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Bis(pentafulven)komplexe des Titans
… disubstituted pentafulvenes, a series of new bis(fulvene) and bis(benzofulvene) group IV compounds was synthesized within the scope of this thesis. The titanium fulvene compounds are readily prepared by a direct reductive complexation of the fulvenes to titanium trihalide in the presence of …
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Transition metal bis(porphyrin) complexes
Metal bis(porphyrin) complexes M(porph)$\sb2$ have received much attention in the last ten years due to their electronic and structural similarities to the Special Pair in photosynthetic bacteria. The work presented here covers the first transition metal bis(porphyrin) complexes. In addition, the …
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Synthesis of alkyl- and poly(ethylene)glycol linked bis-dioxocyclams from bis-chromium carbene complexes
Alkyl-linked bis-chromium carbene complexes have been prepared via deprotonation and α-alkylation of (methoxy)(methyl) chromium carbene complexes using l,n-bis-triflates as electrophiles. These bis-carbene complexes were then photolyzed with N-protected imidazolines to give protected bis-azapenams. …
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Síntesis y estudio de las reacciones de cicloadición de bis- ditiolo- 1,4- Tiazinas y bis- ditiolopirroles
… materiales. 2. Estudio de la reactividad de bisditioltionas frente a reactivos 1,3-dipolares Las bisditioltionas reaccionan frente a reactivos 1,3-dipolares involucrando unicamente al grupo tiona. Se genera de esta forma un cicloaducto de estructura espiranica, que normalmente sufre una …
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Aufbereitung von Brauereiabwasser bis zur Wiederverwendbarkeit
The buffering and balancing basins of a brewery have been developed to an aerobic wastewater treatment plant. The procedures have been adapted on the demands of the further treatment. One- and two stage membrane-plants have been piloted, a cleaning concept has been developed and filtrates and …
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Functional Nanomaterials From Bis-Urea Macrocycles
<p>Self-assembly of bis-urea macrocycles usually give tubular crystals with nano-sized channels that we use as molecular container. These molecular containers alter the reactivity, stability, and chemical behavior of the reactants entrapped within them. This dissertation is focused on bulk …
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Chemoselective Oxidation of 6,13-Bis(decylthio) Pentacene
<p>Organic semiconductors present much potential for industrial use because of their possible low cost production, Pentacene and pentacene derivatives are promising candidates for organic semiconductor research since their ^-conjugated electronic structures possess small HOMO- LUMO gaps and high …
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Surface Catalyzed Fenton Treatment of bis(2-chlorethyl) ether (BCEE), bis(2-chloroethoxy) methane (BCEM) and 1,2-dichloroethane (1,2-DCA)
… remediate soil and groundwater contaminated with bis(2-chloroethyl ether (BCEE), bis(2-chloroethoxy) methane (BCEM), and 1,2-dichloroethane (1,2-DCA) among other contaminants. Parameters that affect the contaminant loss rate such as pH, hydrogen peroxide concentration and solid/water ratio were …
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Keramik der spätfrühdynastischen bis spätassyrischen Zeit aus Assur
… welche die Besieldungsgeschichte vom späten 3. bis in die erste Hälfte des 1. Jt. v. Chr. umfaßt. Diese Möglichkeit ergab sich mit der parallel durchgeführten Aufarbeitung der Gefäßkeramik des 1988-89 unter der Leitung von Reinhard Dittmann (damals Freie Universität Berlin) am westlichen Ende …
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LITISPENDENZA E CONNESSIONE NEL REGOLAMENTO BRUXELLES I-BIS
… come disciplinate nel regolamento Bruxelles I-bis. Al fine di meglio comprendere il sistema in cui la norma sulla litispendenza si cala si è proceduto ad effettuare innanzitutto una ricostruzione del percorso di formazione del diritto processuale europeo, a partire dai trattati costitutivi …
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