A series of nine cationic heteroleptic aryl-BIAN-copper(I) (BIAN = bis-iminoacenaphthene) complexes with the general formula [Cu((E-C6H4)2BIAN)(PPh3)2][X] (E = p-Me, p-iPr, o-iPr; X = BF4, OTf, NO3) 1X–3X were synthesized and fully characterized using several analytical techniques, including NMR spectroscopy and single-crystal X-ray diffraction. Except for complexes 2BF4 and 3BF4, which were already reported in our previous works, all remaining complexes are herein described for the first time. Two different strategies were used for the preparation of the complexes: complexes bearing BF4− or OTf− counter-ions (1BF4, 1OTf, 2OTf, and 3OTf) were obtained using the appropriate copper(I) precursors [Cu(NCMe)4][BF4] or [Cu(NCMe)4][OTf], whereas for derivatives 1NO3–3NO3, [Cu(PPh3)2NO3] was used. Their activity as catalysts for the copper azide-alkyne cycloaddition (CuAAC) was assessed alongside other high activity, previously reported Cu(I) complexes. Comparative studies to determine the influence of the counter-ion and of the aryl substituents were performed. All complexes behaved as active catalysts under neat reaction conditions, at 25 °C and in short reaction times without requiring the use of any additive, with complex 2NO3 being the most efficient derivative, along with other NO3−-bearing complexes.

De maneira geral, costuma-se agrupar a obra de Aluísio Azevedo em dois segmentos. De um lado, ficariam obras de indiscutível qualidade literária, caso de O cortiço, Casa de pensão e O Mulato; de outro, os livros destinados às folhas matutinas e, portanto, escritos para atender à demanda dos leitores de jornais. Essa divisão contribuiu para que grande parte dos romances desse escritor, despertasse pouco interesse de estudo por parte da crítica. No caso da obra O Coruja, alguns críticos a condenam; outros consideram suas qualidades, mas lamentam o fato de o romance ter sido escrito apressadamente para ser publicado como folhetim. Por isso, achamos relevante apresentar neste artigo breve explanação sobre a recepção da obra de Aluísio Azevedo, com destaque para o romance O Coruja. *** The critical reception of the novel O Coruja, by Aluísio Azevedo ***In general, it is customary to organize the novels of Aluísio Azevedo into two segments. On the one hand, they would be books of indisputable literary quality (O cortiço, O homem and O mulato); on the other, the books written for the morning paper and, therefore, written to meet the demands of newspaper readers. That division contributed to some novels by Aluísio Azevedo are little studied. In the case of book O Coruja, some critics condemn; others critics consider their qualities, but they talk the fact that novel be written hastily, for be published in serial. Therefore, we present in this article relevant brief xplanation about the reception of the work of Aluísio Azevedo, especially the novel O Coruja.Keywords: Aluísio Azevedo; O Coruja; Critical fortune.