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Alumazene Reactivity with Quinolinols – Addition and Substitution Reactions on the Al3N3 Ring

Iva Kollhammerova, Michal Babiak, Marek Necas, Petr Taborsky, Josef Kucera, Jiri Pinkas

Abstract


Molecular structures of two compounds obtained in reactions of alumazene [DippNAlMe]3 (1, Dipp = 2,6-i-Pr2C6H3) with substituted quinolinols have been elucidated by the single-crystal X-ray diffraction analysis. Quinolin-8-ol (Hq) provides a dinuclear complex [(DippNH)2Al2Me2(q)2] (2) with a central Al2O2 ring and five-coordinate Al atoms. The compound 2×THF crystallizes in the orthorhombic Pbca space group. The molecular structure of a mononuclear complex [(DippNH)Al(Meq)2] (3) obtained in the reaction of 1 with 2-methylquinolin-8-ol (HMeq) possesses a five-coordinate Al center. The structure was solved in a triclinic cell P-1. The dinuclear complex 2 can be considered as a model product of alcohol addition on the formal Al-N double bond, while the mononuclear complex 3 represents subsequent reaction of remaining Al-Me moiety with proton. Both complexes 2 and 3 are highly luminescent showing emission around 500 nm in solid state.


Keywords


alumazene; crystal structure; quinolin-8-ol; 2-methylquinolin-8-ol; luminescence

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DOI: http://dx.doi.org/10.17344/acsi.2018.4624

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