Concise access to aluminum containing [3.3](2,6)pyridinophane and molecular bowl using 2,6-diamidopyridine modules

Publication date: Available online 17 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Chandrakala Negi, Deependra Bawari, Sandeep Kumar Thakur, Angshuman Roy Choudhury, Sanjay SinghAbstractBy varying the relative stoichiometry of the building block bis(trimethylsilyl)–N,N′–2,6–diaminopyridine (bap) and EtAlCl2 or AlCl3, different molecular entities (mononuclear and dinuclear complexes, pyridinophane and molecular bowl) containing aluminum centres have been synthesized. Efforts to extend the approach to synthesize triazinophanes with bis(trimethylsilyl)-N,N′-2,4-diamino‒6‒(R)‒triazine (R = Me, NH(SiMe3), Ph) in their reaction with AlMe3 showed strong preference for the formation of dinuclear aluminum complexes over the analogous pyridinophane like structures. All the new compounds have been fully characterized using multinuclear NMR, HRMS and single crystal X-ray diffraction.Graphical abstract

Source: Journal of Organometallic Chemistry - September 18, 2019 Category: Chemistry Source Type: research