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doi:10.22028/D291-22557
Titel: | Zur Koordination unterschiedlicher Hauptgruppenmetalle mit einem speziellen, chelatisierenden Silazan |
VerfasserIn: | Veith, Michael Goffing, Friedrich Huch, Volker |
Sprache: | Deutsch |
Erscheinungsjahr: | 1988 |
Quelle: | Zeitschrift für Naturforschung / B. - 43. 1988, S. 846-856 |
Kontrollierte Schlagwörter: | Hauptgruppenmetall Silazane |
DDC-Sachgruppe: | 540 Chemie |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | The cis-isomer of the silazane H2L (1) (L=[NtBu][Me]Si(ntBu)2Si[Me][NtBu]) has been used as a ligand to main group metals. By displacing the hydrogen atoms of 1 the compounds L(MgMe)2 (4), L(MgCl)2 (5) and L(Li)(InMe2) (6) have been obtained. According to the 1H NMR spectra the structures of 4-6 are very similar: a polycyclic, cubane-like Si2N4M2 framework results from the special atomic arrangements and from intramolcular Lewis acid-base interactions between the metals M and the nitrogen atoms. Divalent metals and metal-centered groups can also be incorporated into 1. In the latter case a seco norcubane-like polycycle Si2N4M is produced as confirmed by X-ray structure determinations of LGaMe (8) and LSb+InCl4- (11). LInMe (7) and LSn (9) seem to adopt the same tricyclic structure as 8, although the 1H NMR spectra are not consistent with a rigid molecule (low symmetry), but rather with a fluxional behaviour (high symmetry). When 5 is allowed to react with sodium/naphthalene in THF part of the magnesium is reduced and LMg(THF)2 (12) is formed. An X-ray structure determination of 12 reveals the compound to be only bicyclic with the magnesium atom coordinated by two nitrogen and two THF oxygen atoms. |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291-scidok-20242 hdl:20.500.11880/22613 http://dx.doi.org/10.22028/D291-22557 |
Datum des Eintrags: | 2-Feb-2009 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie SE - INM Leibniz-Institut für Neue Materialien |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes INM |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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ve198813.pdf | 5,38 MB | Adobe PDF | Öffnen/Anzeigen |
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