Now showing 1 - 10 of 33
  • 2012Journal Article
    [["dc.bibliographiccitation.firstpage","no"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","ChemInform"],["dc.bibliographiccitation.lastpage","no"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Leibeling, Markus"],["dc.contributor.author","Pawliczek, Martin"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Werz, Daniel B."],["dc.date.accessioned","2021-12-08T12:30:01Z"],["dc.date.available","2021-12-08T12:30:01Z"],["dc.date.issued","2012"],["dc.identifier.doi","10.1002/chin.201223107"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/96293"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-476"],["dc.relation.issn","0931-7597"],["dc.rights.uri","http://doi.wiley.com/10.1002/tdm_license_1.1"],["dc.title","ChemInform Abstract: A Ridge Walk Between Reaction Modes: An Unprecedented Pd-Catalyzed Domino Sequence of Diynyl-Substituted Bromoarenes."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]
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  • 2010Journal Article
    [["dc.bibliographiccitation.firstpage","2343"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Organometallics"],["dc.bibliographiccitation.lastpage","2347"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Tavcar, Gasper"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Hey, Jakob"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T08:43:09Z"],["dc.date.available","2018-11-07T08:43:09Z"],["dc.date.issued","2010"],["dc.description.abstract","The base-stabilized bis-silylene (LSi-SiL, L = PhC(NtBu)1) was reacted with benzophenone in a 1:2 ratio in THF, which afforded a Si2O2 four-membered ring, stabilized by bulky amidinato ligands. The most striking phenomenon is the abstraction of oxygen from benzophenone and the simultaneous formation of a silicon carbon bond. The four-membered Si2O2 ring is planar, and both the silicon atoms are five-coordinate. The two silicon atoms are arranged opposite each other in the four-membered Si2O2 ring. Moreover LSi-SiL was treated with N2O to afford two four-membered Si3O, rings connected with two oxygen atoms. In this structure also the silicon atoms are five-coordinate."],["dc.identifier.doi","10.1021/om100164u"],["dc.identifier.isi","000277597500017"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19888"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0276-7333"],["dc.title","Synthesis of a Stable Four-Membered Si2O2 Ring and a Dimer with Two Four-Membered Si2O2 Rings Bridged by Two Oxygen Atoms, with Five-Coordinate Silicon Atoms in Both Ring Systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2012Journal Article
    [["dc.bibliographiccitation.firstpage","435"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Organometallics"],["dc.bibliographiccitation.lastpage","439"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Hey, Jakob"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T09:14:25Z"],["dc.date.available","2018-11-07T09:14:25Z"],["dc.date.issued","2012"],["dc.description.abstract","The 1:1 reaction of benzamidinato-stabilized chlorosilylene PhC(NtBu)(2)SiCl (1) with CH(SiMe3)N-2 resulted in the formation of colorless [PhC(NtBu)(2)Si(Cl){N2CH(SiMe3)}}(2) (2), which consists of a four-membered Si2N2 ring. Surprisingly, N-2 elimination from the diazoalkane did not occur, but rather an end-on activation of the nitrogen was observed. For the mechanism, we propose the formation of a silaimine complex A as an intermediate, which is formed during the reaction and dimerized under [2 + 2] cydoaddition to 2. In contrast, treatment of 1 with dichloromethane afforded a 2:1 product, [{PhC(NtBu)(2)Si(Cl-2)}(2)CH2} (3), which is obviously formed by oxidative addition under cleavage of both C-Cl bonds and formation of two Si-Cl and two Si-C bonds. Both silicon atoms in 3 are five-coordinate. Compounds 2 and 3 were characterized by single-crystal X-ray studies, multinuclear NMR spectroscopy, and El-mass spectrometry."],["dc.identifier.doi","10.1021/om201031n"],["dc.identifier.isi","000298897700049"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27405"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0276-7333"],["dc.title","A Remarkable End-On Activation of Diazoalkane and Cleavage of Both C-Cl Bonds of Dichloromethane with a Silylene to a Single Product with Five-Coordinate Silicon Atoms"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2011Journal Article
    [["dc.bibliographiccitation.firstpage","4283"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","4290"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Khan, Shabana"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Tavcar, Gasper"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T08:57:15Z"],["dc.date.available","2018-11-07T08:57:15Z"],["dc.date.issued","2011"],["dc.description.abstract","Heteroleptic chlorosilylene (PhC(NtBu)(2)SiCl) (1) reacts with unsaturated organic compounds under oxidative addition. Reactions of 1 with cyclooctatetraene (COT) and a diimine afford [1+4]-cycloaddition products 3 and 6, respectively. In the case of COT, one Si-N bond of the amidinato ligand is cleaved, resulting in tetracoordinate silicon, whereas with a diimine a penta-coordinate silicon is formed. Treatment of 1 with ArN=C=NAr (Ar=2,6-iPr(2)C(6)H(3)) yields silaimine complex 4 with cleavage of one of the C=N bonds. The facile isolation of silaimine complexes is probably due to the kinetic protection afforded by the bulky Ar moiety. When 1 is treated with tertbutyl isocyanate, cleavage of the C=O bond is observed, which leads to formation of the four-membered Si2O2 cycle 5. The same product is formed when 1 is allowed to react with trime-thylamine N-oxide. When 1 is treated with diphenyl disulfide, cleavage of the S-S bond occurs to form 7. All products have been characterized by multinuclear NMR spectroscopy, EI mass spectrometry, and elemental analysis. In addition, the molecular structures of 3-6 have been determined by single-crystal X-ray diffraction studies. Collectively, these results suggest that owing to the presence of the lone pair of electrons, the propensity of 1 to undergo oxidative addition is very high."],["dc.identifier.doi","10.1002/chem.201001901"],["dc.identifier.isi","000290101500028"],["dc.identifier.pmid","21387421"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23347"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","0947-6539"],["dc.title","Synthesis of Stable Silicon Heterocycles by Reaction of Organic Substrates with a Chlorosilylene [PhC(NtBu)(2)SiCl]"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2013Journal Article
    [["dc.bibliographiccitation.firstpage","1801"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","1805"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Mondal, Kartik Chandra"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Schwarzer, Martin C."],["dc.contributor.author","Frenking, Gernot"],["dc.contributor.author","Tkach, Igor"],["dc.contributor.author","Wolf, Hilke"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Herbst-Irmer, Regine"],["dc.contributor.author","Niepoetter, Benedikt"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T09:30:22Z"],["dc.date.available","2018-11-07T09:30:22Z"],["dc.date.issued","2013"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [RO 224/60-1]; DNRF"],["dc.identifier.doi","10.1002/anie.201204487"],["dc.identifier.isi","000314650600037"],["dc.identifier.pmid","23280727"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31289"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1433-7851"],["dc.title","Conversion of a Singlet Silylene to a stable Biradical"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]
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  • 2010Journal Article
    [["dc.bibliographiccitation.firstpage","3952"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","3955"],["dc.bibliographiccitation.volume","49"],["dc.contributor.author","Ghadwal, Rajendra S."],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Granitzka, Markus"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Merkel, Sebastian"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T08:46:57Z"],["dc.date.available","2018-11-07T08:46:57Z"],["dc.date.issued","2010"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft"],["dc.identifier.doi","10.1002/anie.201000835"],["dc.identifier.isi","000278596800018"],["dc.identifier.pmid","20397177"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20822"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1433-7851"],["dc.title","Convenient Access to Monosilicon Epoxides with Pentacoordinate Silicon"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2011Journal Article
    [["dc.bibliographiccitation.firstpage","2322"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","2325"],["dc.bibliographiccitation.volume","50"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Khan, Shabana"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Meindl, Kathrin"],["dc.contributor.author","Henn, Julian"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Demers, Jean-Philippe"],["dc.contributor.author","Lange, Adam"],["dc.date.accessioned","2018-11-07T09:00:37Z"],["dc.date.available","2018-11-07T09:00:37Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1002/anie.201005866"],["dc.identifier.isi","288036300021"],["dc.identifier.pmid","21351345"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24214"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1433-7851"],["dc.title","Zwitterionic Si-C-Si-P and Si-P-Si-P Four-Membered Rings with Two-Coordinate Phosphorus Atoms"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2013Journal Article
    [["dc.bibliographiccitation.firstpage","4403"],["dc.bibliographiccitation.issue","39"],["dc.bibliographiccitation.journal","Chemical Communications"],["dc.bibliographiccitation.lastpage","4405"],["dc.bibliographiccitation.volume","49"],["dc.contributor.author","Kaschel, Johannes"],["dc.contributor.author","Schmidt, Christian D."],["dc.contributor.author","Mumby, Mark"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Werz, Daniel B."],["dc.date.accessioned","2018-11-07T09:30:02Z"],["dc.date.available","2018-11-07T09:30:02Z"],["dc.date.issued","2013"],["dc.description.abstract","Furan-derived donor-acceptor-substituted cyclopropanes were reacted with Lawesson's reagent. Depending on the reaction conditions either bisthiophenes or unprecedented cage-like molecules were obtained. Woollins' reagent always led to the respective selenium-containing cage-like compounds."],["dc.identifier.doi","10.1039/c2cc37631h"],["dc.identifier.isi","000317931500091"],["dc.identifier.pmid","23247108"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10787"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31206"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Royal Soc Chemistry"],["dc.relation.issn","1359-7345"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Donor-acceptor cyclopropanes with Lawesson's and Woollins' reagents: formation of bisthiophenes and unprecedented cage-like molecules"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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  • 2011Journal Article
    [["dc.bibliographiccitation.firstpage","1370"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","European Journal of Inorganic Chemistry"],["dc.bibliographiccitation.lastpage","1373"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Khan, Shabana"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T08:59:03Z"],["dc.date.available","2018-11-07T08:59:03Z"],["dc.date.issued","2011"],["dc.description.abstract","The reaction of the benzamidinato-stabilized bis(silylene) [PhC(NtBu)(2)Si](2) with cyclooctatetraene resulted in the formation of a colorless compound 7 whithout cleavage of the Si-Si bond of the bis(silylene), whereas one of each Si-N(ligand) bond is opened. Compound 7 was characterized by single-crystal X-ray diffraction, NMR spectroscopy, EI mass spectrometry, and elemental analysis. Investigation of the molecular structure shows that the Si-Si bond length in 7 is 2.4150(7) angstrom and is comparable to that of 6 [2.413(2) angstrom]."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft; Deutscher Akademischer Austausch-Dienst"],["dc.identifier.doi","10.1002/ejic.201100063"],["dc.identifier.isi","000288397700004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23791"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1434-1948"],["dc.title","Reaction of a Base-Stabilized Bis(silylene) [PhC(NtBu)(2)Si](2) with Cyclooctatetraene without Cleavage of the Si-Si Bond"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2010Journal Article
    [["dc.bibliographiccitation.firstpage","3930"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Organometallics"],["dc.bibliographiccitation.lastpage","3935"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Tavcar, Gasper"],["dc.contributor.author","Sen, Sakya S."],["dc.contributor.author","Roesky, Herbert W."],["dc.contributor.author","Hey, Jakob"],["dc.contributor.author","Kratzert, Daniel"],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2018-11-07T08:39:12Z"],["dc.date.available","2018-11-07T08:39:12Z"],["dc.date.issued","2010"],["dc.description.abstract","LSi-SiL (L = PhC(NtBu)(2)) (4) was reacted with benzil in toluene at room temperature to afford a compound that contains two siladioxolene rings connected by a Si Si bond. This is the first reactivity study of 4 where the central Si Si bond was not cleaved during the reaction. Furthermore, LSiCl (L = PhC(NtBu)(2)) (6) was treated with benzil at ambient temperature in toluene to yield 2,5-dioxal -silacyclopent-3-ene (7). Both 5 and 7 were characterized by single-crystal X-ray diffraction and additionally by NMR spectroscopy, El-MS spectrometry, and elemental analysis. Investigation of the molecular structure shows that the Si Si bond length in 5 is 2.36 angstrom, which is more than 2% shorter than the Si Si bond length in 4. The formal oxidation state of silicon in 5 is +3, which is in agreement with its structure. The existence of 5 and 7 as stable compounds indicates that siladioxolenes can be electronically stabilized by sigma-donor ligands."],["dc.identifier.doi","10.1021/om100581u"],["dc.identifier.isi","000281472500029"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18941"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0276-7333"],["dc.title","Reactions of a Bis-silylene (LSi-SiL, L = PhC(NtBu)(2)) and a Heteroleptic Chloro Silylene (LSiCl) with Benzil: Formation of Bis(siladioxolene) and Monosiladioxolene Analogue with Five-Coordinate Silicon Atoms in Both Ring Systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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