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","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","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","37"],["dc.bibliographiccitation.journal","Journal of Organometallic Chemistry"],["dc.bibliographiccitation.lastpage","48"],["dc.bibliographiccitation.volume","344"],["dc.contributor.author","Stalke, Dietmar"],["dc.contributor.author","Klingebiel, Uwe"],["dc.contributor.author","Sheldrick, George M."],["dc.date.accessioned","2009-06-23T11:37:06Z"],["dc.date.accessioned","2021-10-27T13:11:58Z"],["dc.date.available","2009-06-23T11:37:06Z"],["dc.date.available","2021-10-27T13:11:58Z"],["dc.date.issued","1988"],["dc.description.abstract","Dimeres Lithium-t-butylamino-di-t-butylfluorosilan, [(CMe3)2SiFLiNCMe3]2, addiert beim Kristallisieren aus THF pro Dimer ein Molekül THF. Es entsteht ein Bicyclus mit Lithium in Vier-[F2Li(THF)N] und Zweifachkoordination [NLiN]. Die Si(1)---N(1)-Bindungslänge des sechsgliedrigen Ringes hat die Grössenordnung einer -Bindung und ist 5.4 pm kürzer als die Si(2)---N(2)-Bindung des viergliedrigen Ringes. 7Li- und Festkörper-13C-NMR-Aufnahmen bestätigen die Asymmetrie des Moleküls. Eine Äquilibrierung der H-, C-, F-, und Si-Atome verdeutlichlen Lösungs-NMR-Aufnahmen, ein Befund, der mit fluktuierender Li(1)---N(1)- und Li(1)---N(2)-Bindung zu erklären ist. Vergleichbare NMR-Daten liefert das THF-Addukt des lithiierten t-Butylamino-bis(methyl-trimethylsilylamino)-fluorsilan, [(Me3SiNMe)2-SiFLiNCMe3]2·THF. Abstract: Dimeric lithium-t-butylamino-di-t-butylfluorosilane, [(CMe3)2SiFLiNCMe3]2, adds one molecule of THF per dimer when crystallized from THF. A bicyclic compound is obtained with fourfold [F2Li(THF)N] and twofold [NLiN] coordinated lithium. The Si(1)---N(1) bond lenght in the six-membered ring has the lenght expected for a bond and is 5.4 pm shorter than the Si(2)---N(2) bond of the four-membered ring. The 7Li and the solid state 13C NMR spectra confirm the asymmetry of the molecule. NMR spectra in solution show an equilibration of the H, C, F and p. atoms, a feature which is consistent with fluctuation of Li(1)---N(1) and Li(1)---N(2) bonds. The THF adduct of lithiated t-butylamino-bis(methyltrimethylsilylamino)-fluorosilane exhibits similar NMR effects."],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1016/0022-328X(88)80211-0"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3283"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91645"],["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","Bicyclische Lithium-t-butylaminofluorsilane, Moleküle mit zwei- und vierfachkoordinierten Lithium"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]