@article{2928284, title = "Group III quinaldates: synthesis, structure and photoluminescence", author = "Christiana Birnara and Vadim G. Kessler and Giannis S. Papaefstathiou", journal = "Russian Journal of Coordination Chemistry", year = "2017", volume = "70", number = "6", pages = "997--1007", publisher = "Informa UK Limited", issn = "1070-3284, 1608-3318", doi = "10.1080/00958972.2017.1283416", abstract = "The reactions of Al(III), Ga(III) and In(III) nitrates with 2-quinaldic acid (qaH) afforded [Al-2(OH)(2)(qa)(4)]center dot 2H(2)O (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 [Al-2(mu-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. [GRAPHICS] ." }