Homo- and heterometallic complexes constructed from hexafluoroacetylacetonato and Schiff-base complexes as building-blocks

Synthesis of Structurally Diverse Ferrimagnetically and Antiferromagnetically Coupled MII–MnII (M = Cu, Ni) Heterometallic Schiff Base Compounds with a Dicyanamide Spacer and Study of Biomimetic Catalytic Activity

“…The Schiff base ligand [H 2 L] and the metalloligand [CuL] were synthesized by a procedure reported earlier …”

“…The Schiff base ligand [H 2 L] and the metalloligand [CuL] were synthesized by a procedure reported earlier. 47 Synthesis of the Compound {[(CuL)Mn(N(CN) 2 ) 2 ]•CH 3 CN} ∞ (1). The metalloligand [CuL] (0.369 g, 1 mmol) was dissolved in 10 mL of an acetonitrile/methanol (v/v 1:1) solvent mixture, and then Mn(ClO 4 ) 2 •6H 2 O (0.362 g, 1 mmol) was added to the solution.…”

Synthesis, structural, vibrational and DFT investigation of new binuclear molecular Pd–Cu and Cu–Cu complexes formed by Schiff base and hexafluoroacetylacetonate building blocks

“…The detected values of the electron density and its Laplacian at the bond critical points between copper or palladium atoms and oxygen or nitrogen atoms are in good agreement with the results of other works (Tables 4 precursors are of great interest and will be a subject of future works. In addition, the binuclear complexes synthesized here can be used to obtain molecular metal-organic films by physical vapor deposition [57,58], and the proximity of metal centers the molecules of this type can exhibit interesting magnetic properties [26,59].…”

Structural Diversity and Spectral Properties of the Crystals of Heterometallic Complexes Derived from TM(acacen) and Pb(diketonate)2, TM = Cu, Ni, Pd

“…Heterometallic compounds involving neutral complexes of transition metals (TM) with tetradentate Schiff bases (SB) as salen- or acacen-like ligands are well-known (salen = N , N ′- N , N ′-ethylenebis­(salicylimine); acacen = N , N ′-ethylenebis­(acetylacetoniminate)) and intensively studied since they form different types of bi- or polynuclear complexes with remarkable properties, useful for optical, magnetic, sensor, catalytic, and energy conversion applications − or they are also precursors for inorganic materials. , Among them, complexes of the type [TM­(SB)*M­(dik) n ] (M = TM or Ln; dik = β-diketonate ligand) have a discrete molecular crystal structure, where a variation in the structure and composition of the ligands and metals makes these complexes convenient objects for studying composition-structure-property relationships to design new compounds and materials. Heterometallic complexes of this type are formed via a donor–acceptor interaction between the central atoms and donor atoms of the ligands of monometallic subunits.…”

“…Heterometallic complexes are more stable if the acceptor coordinates fluorine-containing ligands. Many examples of heterometallic complexes containing SB = salen-like ligands showed that the packing of molecules in crystals is determined in many ways by the π–π or TM−π stacking interactions due to the presence of aromatic fragments in the ligand. , Such and other features of the crystal structure, in particular, were correlated to the observed structural and magnetic properties. − In addition, by the example of [Cu/Ni­(SB)*Ln­(dik) 3 ] complexes, it was shown that the volatility of acacen-containing heterocomplexes is higher than that of salen-containing ones . As a result, the most studied are complexes containing combinations of transition metals or with lanthanides and minor attention has been paid to complexes involving main group metals. − In turn, for a number of related [Pd­(ki) 2 Pb­(hfa) 2 ] (ki = β-ketoiminate, hfa = hexafluoroacetylacetonate) complexes, the packing motif in their crystals has been shown to be substantially determined by the presence of metallophilic interactions in these compounds. , Thus, a combination of various metals and ligands allows obtaining heterometallic complexes with peculiar or even unexpected structures and properties.…”