The degradation of the kinetically inert and potent greenhouse gas sulfur hexafluoride by a bimetallic main-group ambiphile (Lewis amphotere) is reported. Reaction of the bis(gallylene) 1 with SF 6 at 80 °C results in the selective formation of the bimetallic gallium(II) fluoride 2 . Irradiation with…
Washington, DC: American Chemical Society, 2025-12-08
Reaction of the bis(gallylene) 1 with azobenzene and the triphosphirane (PMes) 3 gives rise to the bis(spirocycle) 2 and the 1,2‐diphospha‐3,4‐digalletane 4 , respectively. These findings highlight the ambident reactivity of the bis(gallylene) as its two low‐valent gallium centers react individually…
Polyesters such as polylactic acid belong to the most useful biodegradable polymers being able to substitute polyolefins in many applications. In search for potent catalysts based on bio-compatible and non-critical raw materials bimetallic cooperativity has emerged as a powerful approach, but one that…
London: The Royal Society of Chemistry, 2025-10-09
Im Vergleich zu Magnesium-basierten Grignard-Reagenzien finden Calcium-Grignard-Verbindungen eine deutlich geringere Aufmerksamkeit in der anorganischen und organischen Synthesechemie. Eine breite Anwendung ist insbesondere auf eine begrenzte Auswahl an Zugangswegen zurückzuführen, welche durch die Reaktionsträgheit…
NHC-Borane verfügen über ein großes Potential für Anwendungen in der organischen Synthese in Form vielseitiger Reaktionspartner und Katalysatoren. Besonders vielversprechend für zukünftige Anwendungen sind hierbei reaktive Zwischenstufen, wie NHC-stabilisierte Borkationen und Borylanionen, welche aus…
The dinuclear bis( N ‐heterocyclic carbene) borane adduct 2 rapidly reacts with tritylium salts at room temperature but the outcome is strongly impacted by the respective counter‐ion. Using tritylium tetrakis(perfluoro‐ tert ‐butoxy)aluminate affords – depending on the solvent – either the bis(boronium)…
Abstract Zinc(II) complexes bearing bis(β‐diketiminate) ligands with various linker groups and terminal substituents have been synthesized by deprotonation of the related bis(β‐diketimine)s with zinc(II) bis[bis(trimethylsilylamide)] and diethyl zinc, respectively. One mononuclear and seven dinuclear…
Researchers are spending an increasing fraction of their time on applying for funding; however, the current funding system has considerable deficiencies in reliably evaluating the merit of research proposals, despite extensive efforts on the sides of applicants, grant reviewers and decision committees.…
Many chemicals known today are partially or fully aromatic, since a ring framework experiences additional stabilization through the delocalization of π‐electrons. While aromatic rings with equal numbers of π‐electrons and ring atoms such as benzene are particularly stable, those with the minimally required…
Zielsetzung der Dissertation ist die Etablierung neuer Synthesemethoden zu calciumorganischen Verbindungen. Einfache Zugangangswege vergrößern das Anwendungsfeld dieser, da die Synthesen auch in Laboratorien ausgeführt werden können, die nur eine grundlegende Inert-Arbeitsweise verfolgen. In der metallorganischen…
Ein umfassendes, analytisch erklärendes Verständnis der nicht-kovalenten Wechselwirkungen zwischen Kationen und elektronenreichen π-Systemen bedarf noch weiterer Forschung. Sie sind essenziell für biomolekulare Strukturen, die Proteinfaltung und Protein-Ligand-Erkennungsprozesse. Neuere theoretische…
This work describes the synthesis and investigation of two different polymer systems, which are potentially suitable for the transport of nucleic acids, and can thus find use in (targeted) drug transport. On the one hand, a water-soluble and polyether-based AB diblock copolymer system that can form polyplexes…
Dianionic N,N-chelating ligands play a crucial role in coordination chemistry, but reports on related complexes remain limited to certain types of ligands. In here, the reactions of two diprotic ligands, i.e., a biguanide and a carbothiamide, with trimethylaluminium, are reported, which give rise to…
Die meist verbreiteten und effektivsten Katalysatoren basieren auf Übergangsmetallen. Aufgrund der zusätzlichen d-Orbitale können Übergangsmetalle leicht ihre Koordinations- und Oxidationszahl wechseln, wodurch Katalysezyklen ermöglicht werden. Die Verfügbarkeit dieser Übergangsmetalle in der Erdkruste…
In this thesis the synthetic build-up of discrete polynuclear coordination compounds utilising 3d transition metal ions and lanthanoid ions with tritopic ligands based on triaminoguanidine and aromatic aldehydes is reported. These molecular magnets are structurally and magnetically characterised amongst…
The objectives of this work were the synthesis of mixed-valent phosphorus compounds including related precursor reagents and investigations of their reactivity. The synthetic approach of salt metathesis of phosphinic chlorides with alkali metal phosphanides, which was believed to be straightforward to…
A series of ten dinuclear aluminum alkyl complexes based on rigid, semirigid, and flexible bis(β‐diketiminate) ligands (NacNac) has been obtained from the reaction of trimethylaluminum and the corresponding bis(β‐diketimine)s. All compounds were fully characterized using NMR and IR spectroscopy and elemental…
Polytopic ligands have become ubiquitous in coordination chemistry because they grant access to a variety of mono‐ and polynuclear complexes of transition metals as well as rare‐earth and main‐group elements. Nitrogen‐based ditopic ligands, in which two monoanionic N,N‐binding sites are framed within…