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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Neue Cyclophosphazene mit Metallen der III. Hauptgruppe als Ringbausteine / New Cyclophosphazenes with Metals of Main Group III as Building Blocks

  • Reinhard Hasselbring , Herbert W. Roesky , Andreas Heine , Dietmar Stalke and George M. Sheldrick
From the journal Zeitschrift für Naturforschung B
https://doi.org/10.1515/znb-1994-0110
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Abstract

Acylic silylated phosphazenes of the type HN(PR2NSiMe3)2 (1) react quantitatively with molecules MMe3 (M = Al, Ga, In) under ring formation and CH4 evolution. The ring compounds N(PPh2NSiMe3)2AlMe2 (2 a) and N(PPh2NSiMe3)2InMe2 (4 a) have been investiga­ ted by X-ray structure determination. 2a and 4a crystallize in the space groups P 1̄ and P 31, respectively; they show different conformations regarding the cyclohexane framework. NMR spectroscopy of the nuclei in the chelating phosphazene ligand indicates decreasing Lewis acidity of the metal containing fragments in the series AlMe2 ≥ GaMe2 > InMe2.

Keywords: Cyclophosphazenes; Chelating Ligands; Conformational Isomers; Lewis Acidity; 27Al NMR Spectra
Received: 1993-9-22
Published Online: 2014-6-2
Published in Print: 1994-1-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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From the journal
Zeitschrift für Naturforschung B
Zeitschrift für Naturforschung B
Volume 49 Issue 1

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Contents
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