Aryl and 1,3-dioxoindanyl derivatives of azoles and azines (review)

Abstract

Data on the synthesis, tautomerism, complexing characteristics, and luminescence of 2- (2′-amino-, hydroxy-, hydrochalcogenophenyl)azoles, azines, and hetarylindanediones are reviewed.This review is devoted to the recent chemistry of five-and six-membered nitrogen-containing heterocycles containing 2-amino-, 2-hydroxy-, and 2-hydrochalcogenophenyl and indanedione (thione) fragments. These compounds are of fundamental importance during the investigation of fundamental problems in the chemistry of heterocyclic compounds -synthesis, tautomerism in heteroaromatic systems [1][2][3][4], their complexing characteristics [5], and their valuable properties [6][7][8].

Coordination Aspects in Modern Inorganic Chemistry

“…This technique is applied for obtaining chelates of chalcogen-azomethines 82 and 83 from low-stable Schiff bases or 2-phenylazoles [14,41]. …”

“…Reactivity of metal complexes is an important area of coordination chemistry [47][48][49][50], including reactions on coordinatively-unsaturated donor centers 52, 59 [14,17,25,26] or metals complex-formers 54-57 [14, 41,42], as well as reactions of self-assembling, leading to various supramolecular structures [19][20][21]. Reactions of coordinated inorganic and organic ligands are of the high interest.…”

“…Complex compounds of azomethine 163-166, azine 167-168, and azole 169-170 series are important among other functional materials [41,91,92]. They are luminescent in a broad spectral range from visible (red, orange, blue, and violet) to IR-region [41,91].…”

“…They are luminescent in a broad spectral range from visible (red, orange, blue, and violet) to IR-region [41,91]. Thus, complex compounds with blue fluorescence are discovered among mononuclear complexes [91].…”

“…-Diketones and their analogues 173, diketonate complexes 174 [109], azomethinic 175 and heterocyc- Creation of new hard-soft ligand systems is also attractive. One of them 177 was just synthesized [41,[110][111][112] and then a series of transformations was carried out allowing obtaining complexes with hard-hard 178, hard-soft 179 and soft 180 coordination.…”