Group III quinaldates: synthesis,structure and photoluminescence |
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| Authors: | Christiana Birnara Vadim G Kessler |
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| Institution: | 1. Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Zografou, Greece;2. Department of Chemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden |
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| Abstract: | The reactions of Al(III), Ga(III) and In(III) nitrates with 2-quinaldic acid (qaH) afforded Al2(OH)2(qa)4]·2H2O (1), Ga(qa)2(H2O)2]NO3 (2) and In(qa)2(NO3)(H2O)] (3), respectively, in high yields. The crystal structures of 1, 2 and 3 have been determined by single-crystal X-ray crystallography. The structure of 1 features a di-hydroxo bridged Al2(μ-OH)2]4+ dimer in which each Al(III) is further ligated by two bidentate chelate qa? ligands. Complexes 2 and 3 are mononuclear with the M(III) ions in octahedral environments surrounded by two bidentate chelate qa? and two H2O in 2 or one H2O and a terminal NO3? in 3. Characteristic IR as well as thermal analysis and solid-state fluorescence are discussed. |
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| Keywords: | Al(III) complexes crystal structures Ga(III) complexes In(III) complexes quinaldic acid solid-state fluorescence |
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