Bachmann, Sebastian

[["dc.bibliographiccitation.firstpage","8462"],["dc.bibliographiccitation.issue","25"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","8465"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Neufeld, Roman"],["dc.contributor.author","Dzemski, Martin"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T10:12:48Z"],["dc.date.available","2018-11-07T10:12:48Z"],["dc.date.issued","2016"],["dc.description.abstract","New external calibration curves (ECCs) for the estimation of aggregation states of small molecules in solution by DOSY NMR spectroscopy for a range of different common NMR solvents ([D-6]DMSO, C6D12, C6D6, CDCl3, and CD2Cl2) are introduced and applied. ECCs are of avail to estimate molecular weights (MWs) from diffusion coefficients of previously unknown aggregates. This enables a straightforward and elaborate examination of (de)aggregation phenomena in solution."],["dc.description.sponsorship","DNRF [DNRF93]"],["dc.identifier.doi","10.1002/chem.201601145"],["dc.identifier.isi","000380270100008"],["dc.identifier.pmid","27061592"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40307"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1521-3765"],["dc.relation.issn","0947-6539"],["dc.title","New External Calibration Curves (ECCs) for the Estimation of Molecular Weights in Various Common NMR Solvents"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","13141"],["dc.bibliographiccitation.issue","53"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","13149"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Koehne, Ingo"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Niklas, Thomas"],["dc.contributor.author","Herbst-Irmer, Regine"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2020-12-10T14:05:47Z"],["dc.date.available","2020-12-10T14:05:47Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1002/chem.201702378"],["dc.identifier.issn","0947-6539"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/69653"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","A Novel Bulky Heteroaromatic-Substituted Methanide Mimicking NacNac: Bis(4,6- tert- butylbenzoxazol-2-yl)methanide in s-Block Metal Coordination"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","7752"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","7762"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Schnegelsberg, Christoph"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Kolter, Marlene"],["dc.contributor.author","Auth, Thomas"],["dc.contributor.author","John, Michael"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Koszinowski, Konrad"],["dc.date.accessioned","2018-11-07T10:13:01Z"],["dc.date.available","2018-11-07T10:13:01Z"],["dc.date.issued","2016"],["dc.description.abstract","Grignard reagents RMgCl and their so-called turbo variant, the highly reactive RMgCl center dot LiCl, are of exceptional synthetic utility. Nevertheless, it is still not fully understood which species these compounds form in solution and, in particular, in which way LiCl exerts its reactivity-enhancing effect. A combination of electrospray-ionization mass spectrometry, electrical conductivity measurements, NMR spectroscopy (including diffusion-ordered spectroscopy), and quantum chemical calculations is used to analyze solutions of RMgCl (R=Me, Et, Bu, Hex, Oct, Dec, iPr, tBu, Ph) in tetrahydrofuran and other ethereal solvents in the absence and presence of stoichiometric amounts of LiCl. In tetrahydrofuran, RMgCl forms mononuclear species, which are converted into trinuclear anions as a result of the concentration increase experienced during the electrospray process. These trinuclear anions are theoretically predicted to adopt open cubic geometries, which remarkably resemble structural motifs previously found in the solid state. The molecular constituents of RMgCl and RMgCl center dot LiCl are interrelated via Schlenk equilibria and fast intermolecular exchange processes. A small portion of the Grignard reagent also forms anionic ate complexes in solution. The abundance of these more electron-rich and hence supposedly more nucleophilic ate complexes strongly increases upon the addition of LiCl, thus rationalizing its beneficial effect on the reactivity of Grignard reagents."],["dc.description.sponsorship","Deutsche Forschungsgmeinschaft [KO 2875/4-1]"],["dc.identifier.doi","10.1002/chem.201600699"],["dc.identifier.isi","000380267100015"],["dc.identifier.pmid","27150118"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1521-3765"],["dc.relation.issn","0947-6539"],["dc.title","Association and Dissociation of Grignard Reagents RMgCl and Their Turbo Variant RMgCl center dot LiCl"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5689"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Dalton Transactions"],["dc.bibliographiccitation.lastpage","5699"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Visscher, Arne"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Schnegelsberg, Christoph"],["dc.contributor.author","Teuteberg, Thorsten L."],["dc.contributor.author","Mata, Ricardo A."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T10:20:39Z"],["dc.date.accessioned","2020-05-12T10:21:05Z"],["dc.date.available","2018-11-07T10:20:39Z"],["dc.date.available","2020-05-12T10:21:05Z"],["dc.date.issued","2016"],["dc.description.abstract","Fluorescence spectroscopy investigations of the new acridine derivative bis(N, N-dimethylaminemethylene) acridine (3) show remarkable selectivity and sensitivity towards Zn2+ and Cd2+ ions in methanol and for the latter even in water. Through the chelation of the metal ions the present PET effect is quenched, significantly enhancing the emission intensity of the fluorophore. In solution, the bonding situation is studied by fluorescence and NMR spectroscopy, as well as ESI-TOF mass-spectrometry measurements. The solid state environment is investigated by X-ray diffraction and computational calculations. Here, we can show the complexation of the zinc and cadmium ions by the methylene bridged amine receptors as well as by the nitrogen atom of the acridine system."],["dc.description.sponsorship","Danish National Research Foundation [DNRF93]; Land Niedersachsen"],["dc.identifier.doi","10.1039/C6DT00557H"],["dc.identifier.isi","000372608300032"],["dc.identifier.pmid","26928871"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12840"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41933"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65184"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","1477-9234"],["dc.relation.issn","1477-9226"],["dc.rights.access","openAccess"],["dc.title","Highly selective and sensitive fluorescence detection of Zn2+ and Cd2+ ions by using an acridine sensor"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","15141"],["dc.bibliographiccitation.issue","47"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","15145"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Koehne, Ingo"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Herbst-Irmer, Regine"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2020-12-10T14:08:22Z"],["dc.date.available","2020-12-10T14:08:22Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1002/anie.201706316"],["dc.identifier.issn","1433-7851"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70438"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","A Water-Containing Organopotassium Compound Based on Bis(4,6- t Bu-benzoxazol-2-yl)methanide and Its Unexpected Stability to Hydrolysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6957"],["dc.bibliographiccitation.issue","24"],["dc.bibliographiccitation.journal","ChemistrySelect"],["dc.bibliographiccitation.lastpage","6960"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Kreyenschmidt, Anne-Kathrin"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Niklas, Thomas"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2020-12-10T14:07:13Z"],["dc.date.available","2020-12-10T14:07:13Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1002/slct.201701497"],["dc.identifier.issn","2365-6549"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70149"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Molecular Weight Estimation of Molecules Incorporating Heavier Elements from van-der-Waals Corrected ECC-DOSY"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Chemical communications (Cambridge, England)"],["dc.contributor.author","Bachmann, Sebastian"],["dc.contributor.author","Gernert, Björn"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2019-07-09T11:42:49Z"],["dc.date.available","2019-07-09T11:42:49Z"],["dc.date.issued","2016-10-12"],["dc.description.abstract","In this paper we present the aggregational motifs of the widely used alkali-metal cyclopentadienides (CpLi, CpNa, CpK, CpRb, CpCs) in THF-d8 solution estimated by ECC-DOSY NMR spectroscopy. They form monomeric contact ion pairs (CIPs) in THF-d8 solution, whereas in NH3 solvent-separated ion pairs (SSIPs) are observed. The applicability of ECC-DOSY is further advanced by introducing ECC-MW estimation software."],["dc.format.extent","4"],["dc.identifier.doi","10.1039/c6cc07273a"],["dc.identifier.pmid","27731871"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13768"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58753"],["dc.language.iso","en"],["dc.relation.issn","1364-548X"],["dc.rights.access","openAccess"],["dc.title","Solution structures of alkali metal cyclopentadienides in THF estimated by ECC-DOSY NMR-spectroscopy (incl. software)."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]