Sheldrick, George M.

[["dc.bibliographiccitation.firstpage","C15"],["dc.bibliographiccitation.journal","Journal of Organometallic Chemistry"],["dc.bibliographiccitation.lastpage","C19"],["dc.bibliographiccitation.volume","366"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Meyer, Matthias"],["dc.contributor.author","Andrianarison, Mbolatiana"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2009-06-23T12:09:38Z"],["dc.date.accessioned","2021-10-27T13:11:51Z"],["dc.date.available","2009-06-23T12:09:38Z"],["dc.date.available","2021-10-27T13:11:51Z"],["dc.date.issued","1989"],["dc.description.abstract","Di-t-butylfluorosilylphenylphosphane (I) reacts with CMe3Li to give the lithium compound [(CMe3)2SiFLi(THF)2PC6H5]2 (II) and butane. The crystal structure of II has been determined. The Si---P bond length (217.1 pm) in the eight-membered ring is extremely short. The Si---P spin coupling constant (84.12 Hz) in II is remarkably large. LiF elimination from II leads to the formation of the four-membered (Si---P) ring III. The bis(fluorosilyl)phosphane IV is formed in the reaction of II with Me2SiF2."],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1016/0022-328X(89)87193-1"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3286"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91632"],["dc.language.iso","de"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.orgunit","Fakultät für Chemie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","anorganische Chemie"],["dc.subject.ddc","540"],["dc.title","Lithio-di-t-butylfluorsilylphenylphosphan; im Kristall ein (SiFLiP)2-Achtring"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","779"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Chemische Berichte"],["dc.bibliographiccitation.lastpage","782"],["dc.bibliographiccitation.volume","123"],["dc.contributor.author","Dippel, Kerstin"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Pauer, Frank"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2019-07-09T11:52:03Z"],["dc.date.available","2019-07-09T11:52:03Z"],["dc.date.issued","1990"],["dc.description.abstract","Ring Contractions of Octamethylcyclotetrasilazanes to Silyl-Substituted Cyclotrisilazanes Reaction of the mono- and dilithium derivatives of bis(fluorsilyl)-substituted cyclotetrasilazanes with fluorosilanes and fluoroboranes leads to ring contraction with formation of cyclotrisilazanes (1 - 8). The isomerisation is proved by the crystal structure determination of 1 and by NMR spectroscopy."],["dc.identifier.doi","10.1002/cber.19901230421"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3299"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60081"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Ringkontraktionsreaktionen von Octamethylcyclotetrasilazanen zu silylsubstituierten Cyclotrisilazanen"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17"],["dc.bibliographiccitation.issue","15/16"],["dc.bibliographiccitation.journal","Journal of Organometallic Chemistry"],["dc.bibliographiccitation.lastpage","25"],["dc.bibliographiccitation.volume","265"],["dc.contributor.author","Clegg, William"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2009-06-11T10:57:51Z"],["dc.date.accessioned","2021-10-27T13:12:11Z"],["dc.date.available","2009-06-11T10:57:51Z"],["dc.date.available","2021-10-27T13:12:11Z"],["dc.date.issued","1984"],["dc.description.abstract","The thermal elimination of LiF from lithium aminofluorosilanes provides a simple synthetic route to four-membered silicon-nitrogen rings. In attempts to inhibit sterically the otherwise ready dimerisation of such lithium salts, t-butyl, mesityl and silylamine substituents were introduced. The lithiation of the fluorotris(silylamino)silane (Me3SiNMe)2SiF-NHSiMe2CMe3 and the thermal elimination of LiF led to the formation of a cyclodisilazane, involving migration of a methanide and a silylmethylamine in one of the monomer precursors. The crystal structure of this product has been determined from 3375 unique diffractometer-measured intensities, and refined to R = 0.070. The space group is P21/n, with a 12.458(2), b 22.589(3), c 16.376(4) Å, β 102.33(1)° and Z = 4."],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1016/0022-328X(84)80047-9"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3269"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91668"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.orgunit","Fakultät für Chemie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","anorganische Chemie"],["dc.subject.ddc","540"],["dc.title","Dimerisation of a silicenium ylid by methanide and silylamine migration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2651"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Chemische Berichte"],["dc.bibliographiccitation.lastpage","2653"],["dc.bibliographiccitation.volume","124"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Pauer, Frank"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2019-07-09T11:52:07Z"],["dc.date.available","2019-07-09T11:52:07Z"],["dc.date.issued","1991"],["dc.description.abstract","The lithium derivative of tert-butyl(di-tert-butylfluorosilyl)-amine (1) reacts with sulfur or selenium to give the bis[(fluorosilyl)-amino]di- and -trisulfanes 2, 3 and -selane 4, respectively. The trisulfane 3 crystallizes from n-hexane and exhibits a helical structure (X-ray analysis)."],["dc.identifier.doi","10.1002/cber.19911241203"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3333"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60102"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","1,3-Bis[tert-butyl(di-tert-butylfluorsilyl)amino]trisulfan - eine Verbindung mit FSiNSSSNSiF-Helix"],["dc.title.alternative","1,3-Bis[tert-butyl(di-tert-butylfluorosilyl)amino]trisulfane - a Compound with FSiNSSSNSiF Helix"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","183"],["dc.bibliographiccitation.issue","46"],["dc.bibliographiccitation.journal","Phosphorus, Sulfur and Silicion"],["dc.bibliographiccitation.lastpage","196"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Andrianarison, Mbolatiana"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2019-07-09T11:52:02Z"],["dc.date.available","2019-07-09T11:52:02Z"],["dc.date.issued","1989"],["dc.description.abstract","Di-tert-butyldifluorsilne reacts with lithiated 2,4,6-trimethylphenylphosphane to give (CMe3)2SiFPHC6H2Me3 (1). A lithium derivative is formed in the reaction of 1 with nC4H9Li. The crystal structures of the lithium derivatives (CMe3)2SiFP(C6H2Me3)Li(THF)3 (2) and (CMe3)2SiFLi(TMEDA)PC6H2Me3(3) were determined. The phosphorus atom is planar in 2 and pyramidal in 3. A (SiPLiF)-four-membered ring is formed in 3. LiF-elimination leads to the formation of the (SiP)-four-membered ring (4). The ring system of 4 is completely asymmetrical, indicating that the sterical limits of the dimerisation of the intermediate silaphosphene have been reached. Both 2 and 3 react with CMe3SiF3 to give the substituted compound (CMe3)2SiFP(SiF2CMe3)C6H2 Me3 (5)."],["dc.identifier.doi","10.1080/10426508909412064"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3291"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60074"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Synthesen und Kristallstrukturen der lithierten Silylphosphane (CMe3)2SiFP(Mes)Li(THF)3,(CMe3)2SiFLi(TMEDA)PMes und des cyclischen Silylphosphanes [(CMe3)2SiPMes)]2"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.issue","1-3"],["dc.bibliographiccitation.journal","Journal of Organometallic Chemistry"],["dc.bibliographiccitation.lastpage","124"],["dc.bibliographiccitation.volume","341"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2009-06-11T11:59:33Z"],["dc.date.accessioned","2021-10-27T13:12:12Z"],["dc.date.available","2009-06-11T11:59:33Z"],["dc.date.available","2021-10-27T13:12:12Z"],["dc.date.issued","1988"],["dc.description.abstract","Das Lithiumsalz des Aminofluorsilans (CMe3)2SiFNH2 reagiert mit Me3SnCl zum gemischt silyl- and stannylsubstituierten Amin (CMe3)SiFNHSnMe3 (I). I dismutiert bei Temperaturen höher als 100°C im Vakuum zu (CMe3)2SiFN(SnMe3)2 (II) und (CMe3)2SiFNH2. Die Reaktion kann durch Basen katalysiert werden. II ist thermisch stabil; die Kristallstrukturbestimmung zeigt, dass die FSiNSn2-Einheit in einer Ebene liegt; die Kernresonzspektren deuten auf eine Rotationshinderung der Si---N-Bindung hin. Abstract: The lithium salt of the aminofluorosilane (CMe3)2SiFNH2 reacts with Me3SnCl to give the mixed silyl- and stannyl-sbustituted amine (CMe3)2SiFNHSnMe3 (I). I dismutates at temperatures above 100°C in vacuo to (CMe3)2SiFN(SnMe3)2 (II) and (CMe3)2SiFNH2. The reaction can be catalysed by bases. II is thermally stable; a determination of the crystal structure shows that the FSiNSn2 unit is planar, and the NMR spectra indicate that rotation about the N---p. bond is hindered."],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1016/0022-328X(88)89068-5"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3274"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91670"],["dc.language.iso","de"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.orgunit","Fakultät für Chemie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","anorganische Chemie"],["dc.subject.ddc","540"],["dc.title","N,N-Bis(trimethylstannyl)di-t-butylfluorsilylamin; ein sterisch fixiertes Molekül"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","87"],["dc.bibliographiccitation.journal","Zeitschrift für Anorganische und Allgemeine Chemie"],["dc.bibliographiccitation.lastpage","104"],["dc.bibliographiccitation.volume","584"],["dc.contributor.author","Dippel, Kerstin"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Kottke, Thomas"],["dc.contributor.author","Pauer, Frank"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2019-07-09T11:52:04Z"],["dc.date.available","2019-07-09T11:52:04Z"],["dc.date.issued","1990"],["dc.description.abstract","Mono- und dilithiiertes Octamethylcyclotetrasilazan (1, 6) reagieren mit Fluorsilanen bzw. F2BN(SiMe3)2 unter Erhalt des Cyclotetrasilazangerüstes zu den mono- und disubstituierten Verbindungen 2-5 und 7-13. Bei der Umsetzung des Dilithiumsalzes (6) mit einem Fluorsilan im Molverhältnis von 1:1 werden die Bicyclen 14 und 15 erhalten. Kristallographische Untersuchungen von 2, 3, 8 und 9 zeigen, daß der monosilylierte Achtring in einer Wannen-, der disilylierte Achtring in einer Sesselkonformation vorliegt. In der Kristallstruktur des Bicyclus 14 zeigen die Stickstoffatome der Si3N-Einheiten eine pyramidale Umgebung. Translated Abstract: Fluorosilyl and Fluoroboryl Substituted Cyclotetrasilazanes. Synthesis and Crystal Structures Mono- and dilithiated octamethylcyclotetrasilazanes (1, 6) react with fluorosilanes and F2BN(SiMe3)2, respectively, under retention of the cyclotetrasilazane structure yielding the mono- and disubstituted compounds 2-5 and 7-13. In the reaction of the dilithium compound 6 with a fluorsilane in equivalent amounts, the bicyclic compounds 14 and 15 are obtained. Crystallographic investigations of the compounds 2, 3, 8, and 9 indicate that the monosilylated eight-membered ring has a cradle conformation while the disilylated ring has a chair conformation. The X-ray structure of the bicyclic system 14 indicates that the nitrogen atoms of the Si3N-units have a pyramidal environment."],["dc.identifier.doi","10.1002/zaac.19905840107"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3305"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60086"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Fluorsilyl- und Fluorboryl-substituierte Cyclotetrasilazane - Synthese und Kristallstrukturen"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1457"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Chemische Berichte"],["dc.bibliographiccitation.lastpage","1459"],["dc.bibliographiccitation.volume","121"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2019-07-09T11:52:01Z"],["dc.date.available","2019-07-09T11:52:01Z"],["dc.date.issued","1988"],["dc.description.abstract","Fluorsilylpentafluoraniline [R2SiFNHC6F5, R = CMe3 (1), CHMe2 (2)] entstehen in der Reaktion der Difluorsilane mit lithiiertem Pentafluoranilin. 1 und 2 reagieren mit n-C4H9Li zu ihren Lithiumverbindungen (3, 4) und C4H10. Die Kristallstrukturanalyse von 3 zeigt Lithium mit 2 THF und einem Stickstoff koordiniert; kurze Li··F-Wechselwirkungen werden mit F(Si) und mit einem ortho-F(C) der C6F5-Gruppe beobachtet. Translated abstract: Fluorosilylpentafluoroanilines [R2SiFNHC6F5, R CMe3 (1); CHMe2 (2)] are obtained in the reaction of the difluorosilanes with lithiated pentafluoroanilines. 1 and 2 react with n-C4H9Li to give their lithium compounds (3, 4) and C4H10. The crystal structure determination of 3 shows lithium coordinated by two THF and one nitrogen; short Li··F interactions with F(Si) and with an ortho-F(C) of the C6F5 group were also observed."],["dc.identifier.doi","10.1002/cber.19881210819"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3284"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60071"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Lithium-N-(fluorsilyl)pentafluoraniline - Synthese und Kristallstruktur"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","151"],["dc.bibliographiccitation.journal","Zeitschrift für Anorganische und Allgemeine Chemie"],["dc.bibliographiccitation.lastpage","161"],["dc.bibliographiccitation.volume","582"],["dc.contributor.author","Schütte, Steffen"],["dc.contributor.author","Pauer, Frank"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2019-07-09T11:52:04Z"],["dc.date.available","2019-07-09T11:52:04Z"],["dc.date.issued","1990"],["dc.description.abstract","Die Lithiumverbindungen der Aminofluorsilane (1-7) reagieren mit MHal4 (M = Si, Ge, Sn; Hal = Cl, Br) zu Verbindungen des Typs (8-10, 12, 14: M = Si, 13, 15, 16: M = Ge, 17: M = Sn). Unter intermolekularem Halogenaustausch werden 11, 12 und 14 erhalten, R2SiHal SiHal2F (11, 12: Hal = Cl, 14: Hal = Br). Der Halogenaustausch ist substituentenabhängig und wird nur an halogenierten Disilazanen mit den Substituenten R = Alkyl und Aryl beobachtet. Von 8 und 12 wurde eine Kristallstrukturanalyse durchgeführt. Translated Abstract: Syntheses, Halogeno-Exchange Reactions, and Crystal Structures of Functional Silylamines Lithium compounds of aminofluorosilanes (1-7) react with MHal4 (M = Si, Ge, Sn; Hal = Cl, Br) to give compounds of the type (8-10, 12, 14: M = Si, 13, 15, 16: M = Ge, 17: M = Sn). 11, 12, 14, R2SiHal SiHal2F (11, 12: Hal = Cl, 14. Hal = Br), are obtained by an intermolecular halogeno exchange. The halogeno exchange depends on the substituents and is only observed by halogenated disilazanes with the substituents R = alkyl and aryl. The crystal structures of 8 and 12 were determined."],["dc.identifier.doi","10.1002/zaac.19905820119"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3304"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60085"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Synthesen, Halogenaustausch-Reaktionen und Kristallstrukturen funktioneller Silylamine"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","611"],["dc.bibliographiccitation.journal","Chemische Berichte"],["dc.bibliographiccitation.lastpage","616"],["dc.bibliographiccitation.volume","120"],["dc.contributor.author","Dippel, Kerstin"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.contributor.author","Stalke, Dietmar"],["dc.date.accessioned","2019-07-09T11:52:01Z"],["dc.date.available","2019-07-09T11:52:01Z"],["dc.date.issued","1987"],["dc.description.abstract","1,3-Funktionelle Siloxane [(CMe3)2SiR - O - SiR2Hal, ROH, HalCl, R=CHMe2 (3); RNH2, HalF, R=CHMe2 (4), R=CMe3 (5)] werden durch Reaktion der Dihalogensilane mit lithiiertem Diol 1 und Aminosilanol 2 erhalten. Die Lithiumsalze von 3 und 4 verlieren thermisch LiHal unter Bildung achtgliedriger (SiO)- (6) bzw. (SiNSiO)-Ringe (7). Substitutionen von 4 und 5 mit Halogensilanen führen zur Bildung der 1-(Silylamino)disiloxane 8 - 14. Die Verbindungen 11 und 13 sowie 12 und 14 sind Strukturisomere, die durch 1,3-Silylgruppenwanderung beim lithiierten 4 entstehen. Die durch Anwesenheit von Difluorsilanen katalysierte, intramolekulare Cyclisierung von 8 und 10 stellt eine gezielte Synthese für 1-Oxa-3-aza-2,4-disilacyclobutane (15, 16) dar. Die Lithiumderivate von 9 und 14 - 9a und 14a - zeigen keine Tendenz zur LiF-Eliminierung. Nach der Kristallstrukturanalyse ist 14a ein Dimer mit planaren dreifach koordinierten Lithium- und Stickstoffatomen. Translated Abstract 1,3-Functional siloxanes [(CMe3)2SiR - O - SiR2Hal, ROH, HalCl, R=CHMe2 (3); RNH2, HalF, R=CHMe2 (4), R=CMe3 (5)] are obtained in the reaction of dihalogenosilanes with the lithiated diol 1 and the aminosilanols 2, respectively. The lithium salts of 3 and 4 lose LiHal thermally to give eight-membered (SiO) (6) or (SiNSiO) (7) rings. Substitutions of 4 and 5 with halogenosilanes lead to the formation of the 1-(silylamino)disiloxanes 8 - 14. Compounds 11 and 13 as well as 12 and 14 are sturcutral isomers and are formed by 1,3-silyl group migration of lithiated 4. The intramolecular cyclisation of 8 and 10, which is catalysed by the presence of fluorosilanes, is a direct synthesis of 1-oxa-3-aza-2,4-disilacyclobutanes (15, 16). The lithium derivatives of 9 and 14, 9a and 14a, show no tendency to eliminate LiF. The crystal structure determination shows that 14a is a dimer with planar three-coordinated lithium and nitrogen atoms."],["dc.identifier.doi","10.1002/cber.19871200424"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3272"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60069"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","540"],["dc.title","Durch LiF-Eliminierung zu (SiNSi0)-Vierringen - Kristallstruktur eines"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]