SOME ASPECTS OF COMPETITIVE COORDINATION OF Β-Diketones AND NITROGEN-CONTAINING LIGANDS

A Simple and Efficient Strategy Towards Eleven‐Membered Carbocycles via Novel Synthetic Transformations of Pentafulvenes

“…In addition to the above properties, 1,3-diketones are key structural units in many chelating ligands for lanthanide and transition metals. [28] …”

Novel N-benzimidazolyl-2-thione o-tosylamino(hydroxy)azomethinic tautomeric ligand systems and their metallochelates

“…[17][18][19][20][21][22][23][24][25][26] Binuclear structures 4 containing three ligands, can probably be explained by formation of adducts with participation of coordinatively nonsaturated metals in binuclear structures 3. Table 1 shows the dependence between ion composition, ligand nature and electron configuration of the complex-forming metals.…”

Octahedral bis(2-thenoyltrifluoroacetonato)-ethylenediamine Co(II), Ni(II) and Cu(II) complexes: Synthetic, structural, electrochemical, and theoretical studies

“…Formation of heterocyclic species, namely, 1,4-diazepine and 1,5-benzodiazepine, was indeed observed when 2-thenoyltrifluoroacetone was reacted with 1,2-diaminoethane (en) and 1,2-diaminophenyl, respectively [30], instead of the desired 2-thienyl-containing ONN-tridentate 4 Schif base hemiligands [25,31,32]. Thus, in the quest to prepare thienyl-containing N 2 O 2 tetradentate Schiff base compounds, we attempted condensation reactions by using readily available bis [4,4,4- Schiff base complex [33].…”

“…On the other hand, they are vital building blocks in many pharmaceuticals as well as natural products that exhibit high biological activity [2]. In the field of coordination chemistry, the ability of β-diketones that are also key structural units of numerous chelating ligands, to form chelate supported coordination compounds with different structures and properties with transition-metal and lanthanide ions has been profusely studied [3][4][5]. These properties are widely used in the development of extraction methods for the separation of metallic ions with similar properties [6].…”