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1Author    Bernd Wrackmeyer, HeidiE. Maisel, Max HerberholdRequires cookie*
 Title    N-Ferrocenyl Amines Bearing Boryl and Silyl Substituents at the Nitrogen Atom, Studied by 57Fe NMR Spectroscopy  
 Abstract    A series of ferrocene sandwich compounds such as N-ferrocenyl amine, F c-N H 2 (1), the N-silylated derivatives F c-N H -S iM e3 (2), F c 
  Reference    Z. Naturforsch. 56b, 1373—1375 (2001); received September 19 2001 
  Published    2001 
  Keywords    Ferrocenes, Aminosilanes, Aminoboranes 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1373_n.pdf 
 Identifier    ZNB-2001-56b-1373_n 
 Volume    56 
2Author    Sven Dielkus, D. Orothee Großkopf, Regine Herbst-Irm, Uwe Er, KlingebielRequires cookie*
 Title    Synthesis and Crystal Structure of 2.4-Di-terf-butoxy-2,4-di-terr- butylcyclodisilazane  
 Abstract    Me3CSiHal3 react with LiOCM e3 to give Me3CO (M e3C)SiHal2 (H al = F (1), Cl (3)). The aminofluorosilane, Me3CO (M e3C)SiFNH2 (2), is formed in the reaction of 1 with LiNH2. The dia-minosilane Me3CO(M e3C)Si(NH2)2 (4) is obtai­ ned from the reaction of 2 with ammonia. 4 reacts with LiC4H 9 to give the lithium derivative Me3CO (M e3C)Si(NHLi)NH2 (5). In a molar ratio 1:1 the reaction of 5 and 1 leads to the formation of the l-amino-3-fluoro-disilazane Me3CO (M e3C)S iF -NH -SiNH2(CM e3)OCM e3 (6) and in a molar ratio 2:1 to the four-membered silicon nitrogen ring [Me3CO (M e3C)S i-N H ]2 (7). The crystal structure of 7 was determined. 
  Reference    Z. Naturforsch. 50b, 844—847 (1995); eingegangen am 28. O ktober 1994 
  Published    1995 
  Keywords    Aminosilanes, Aminofluorodisilanes, N -H -Functional Cyclodisilazanes 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0844_n.pdf 
 Identifier    ZNB-1995-50b-0844_n 
 Volume    50 
3Author    Z. NaturforschRequires cookie*
 Title    The Stereochemistry of Chloro-bis(N-morpholino)phenylsilane  
 Abstract    Treatment of phenyltrichlorosilane with an excess of morpholine and N-lithium-morpholide in pentane/toluene affords only the disubstitution product Cl(Ph)Si(M or)2 with Mor = 0 (C H 2C H :)2N-. The third halogen atom is not replaced owing to sterical hindrance. The title compound crystallizes with two independent molecules in the unit cell. These two molecules can be classified as enantiomers, because a disrotatory twist of the two morpholino ligands away from the potential mirror plane induces a chiral conformation. In benzene solution there is racemization owing to completely free rotation, chair/boat interconversion, and nitrogen inversion of the morpholino groups on the NMR time scale, but all CH 2 protons remain anisochronous (diastereotopic). 
  Reference    (Z. Naturforsch. 54b, 18—20 [1999]; received October 15 1998) 
  Published    1999 
  Keywords    Silylamines, Aminosilanes, Symmetry, NMR Data, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0018.pdf 
 Identifier    ZNB-1999-54b-0018 
 Volume    54 
4Author    Th Schlosser, A. Sladek, W. H. Iller, H. SchmRequires cookie*
 Title    Neue mono-und spirobicyclische Aminosilane: Synthese, Struktur und Eigenschaften New M ono-and Spirobicyclic A m inosilanes: Synthesis, Structure and Properties  
 Abstract    The reactions of the N.N'-dialkyl/aryl-ethylenediamines l a -e with equimolar amounts of tetrachlorosilane give the monocyclic aminosilanes 2 a -e in good yields. With two equivalents of the diamines 1 only one spirobicyclic compound, l,4,6,9-tetrabenzyl-l,4,6,9-tetraaza-5-sila-spiro[4.4]nonane, 4e, can be prepared. It is only via an independent double deprotonation of the diamines that the spirobicyclic ethyl-and isopropyl derivatives 4a and 4b are also becoming available. A ll compounds have been characterized by multi-NMR and mass spec­ trometry. In three cases (2d, 2e and 4e), the crystal and molecular structures have been determined by X-ray diffraction analysis. A planar silaimidazolidine ring system has been confirmed for the phenyl substituted species 2d, while in the corresponding benzyl substituted hom ologue 2 e both nitrogen atoms are pyramidal and lead to ring puckering. The silicon atom in 4 e shows a strongly distorted tetrahedral coordination. The endocyclic angle N l -S i -N 2 = 92.8(1)° is nearly orthogonal, and the angle between the planes defined by the silicon and the two nitrogen atoms o f the five-membered rings is 81.4(1)°. 
  Reference    Z. Naturforsch. 49b, 1247—1255 (1994); eingegangen am 21. April 1994 
  Published    1994 
  Keywords    Spirobicyclic Silicon-Nitrogen Compounds, Aminosilanes, Aminochlorosilanes, PECVD-Precursor, Silicon Nitride 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1247.pdf 
 Identifier    ZNB-1994-49b-1247 
 Volume    49