A Pyridine-Stabilized Alumoxane Containing Two 1,3,2-Diazaalumina[3]ferrocenophane Units

✍ Scribed by Bernd Wrackmeyer; Elena V. Klimkina; Wolfgang Milius

• Book ID: 102171670
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 228 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200700869

✦ Synopsis

Abstract

Dialuminoxane 6, in which both aluminum atoms are coordinated by pyridine and each is part of a 1,3‐bis(trimethylsilyl)‐1,3,2‐diazaalumina[3]ferrocenophane unit, was isolated as a side product accompanying the synthesis of the corresponding [3]ferrocenophane with Al–H or Al–Cl functionalities. Although attempted high‐yield syntheses of 6 failed, its structure could be established by ^1^H, ^13^C, and ^29^Si NMR spectroscopy in solution and by X‐ray structural analysis in the solid state. In various experiments to obtain 6, crystalline material was isolated and identified as the desired dialuminoxane either with a linear Al–O–Al (6A) or bent Al–O–Al (6B) unit. This is the first example of a structurally characterized bis(amino)dialuminoxane.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)