Exploration of heterometallic systems containing silver(I) in acyclic Schiff base ligands: Finite and infinite self-assemblies as a result of silver(I)–carbon bond and silver(I)⋯silver(I) interaction

Dimeric, Two‐Dimensional and Metal‐Centered Rectangular Heterometallic CuII–AgI/CdII/BaII Systems Derived from a Single Compartmental Ligand

“…Previously, we reported a number of copper(II)–silver(I) compounds derived from single‐ or double‐compartmental Schiff base ligands ,. The types of those systems include dimer‐of‐dinuclear type structures where diphenoxo‐bridged dinuclear Cu II Ag I moieties are interlinked by Ag–π (η 2 ‐) bonds, as in 1 .…”

“…Undoubtedly, we can say that the following types of single‐compartmental and double‐compartmental ligands are among the most studied ligand systems to derive varieties of metal complexes: (i) 2:1 condensation products of salicylaldehyde or 2‐hydroxyacetophenone or 2‐hydroxypropiophenone and a diamine for single‐compartmental ligands;‐ (ii) 2:1 condensation products of 3‐methoxysalicylaldehyde or 3‐ethoxysalicylaldehyde and a diamine for double‐compartmental ligands ,, The diamine used to derive in these ligands include ethylenediamine, 1‐methylethylenediamine, 1,1‐dimethylethylenediamine, 1,2‐diaminocyclohexane, o ‐phenylenediamine, 1,3‐diaminopropane, 2,2‐dimethyl‐1,3‐diaminopropane, 1,4‐diaminobutane.…”

“…Hundreds of heteronuclear compounds were prepared following this methodology. Those heteronuclear compounds include dinuclear,‐,,,‐,‐ trinuclear,‐,‐,,,‐,,, tetranuclear (including metal‐centered triangles (‘stars’) systems),,,,,,,,,,,,, cocrystals,,,, and coordination polymers ,,,,,,,,,,…”

Mononuclear and heterometallic dinuclear, trinuclear and dimer-of-dinuclear complexes derived from single- and double-compartment Schiff base ligands having a less utilized diamine

“…Two new mononuclear copper(II)/nickel(II) and six new heterometallic complexes of the following types are reported: two diphenoxo-bridged Cu II (U VI O 2 ) (1 and 2), one diphenoxo-bridged Ni II (U VI O 2 ) (3), one dimer-ofdinuclear [Cu II Ag I ] 2 (4) where two diphenoxo-bridged Cu II Ag I units are interlinked by an Ag I -C (g 2 arene) bond and silver(I)ÁÁÁÁsilver(I) interaction, one dimer-of-dinuclear [Cu II Ag I ] 2 (5) where two diphenoxo-bridged Cu II Ag I units are interlinked by Cu II Á Á ÁO(nitrate) semi-coordination and silver(I)Á Á Ásilver(I) interaction and one trinuclear linear Cu II Cd II Cu II compound (6) where copper(II) and cadmium(II) in each of the two Cu II Cd II pairs are bridged by two phenoxo oxygen atoms and two oxygen atoms of a perchlorate ligand. Major outcomes may be summarized as follows: (i) compounds 1-3 are among only a few 3d-uranyl compounds from single-/double-compartment Schiff base ligands [1,[74][75][76][77][78][79][80]; (ii) compound 3 is the sole example of a dinuclear Ni II (U VI O 2 ) system from single-/double-compartment Schiff base ligands [1]; (iii) compounds 4 and 5 are among only a few 3d-silver(I) compounds from single-/double-compartment Schiff base ligands [1,46,49]; (iv) compound 4 is the sole example of a dimer-of-dinuclear [Cu II Ag I ] 2 system where two diphenoxo-bridged Cu II Ag I units are interlinked by the simultaneous effect of a Ag I -C bond and a silver(I)ÁÁÁÁsilver(I) interaction [1]; (v) compound 6 is among just a few examples of discrete trinuclear Cu II Cd II Cu II systems from single-/double-compartment Schiff base ligands [1,30,47]; (vi) the bis(l-phenoxo)-l-perchlorate bridging moiety in compound 6 is new in 3d-cadmium(II) systems from single-/double-compartment Schiff base ligands [1]; (vii) an interesting structural aspect is found in the Cu II (U VI O 2 ) compounds-the two phenyl rings in the Cu II (U VI O 2 ) compounds become less planar in comparison to those of the corresponding mononuclear copper(II) compound derived from a single-compartment ligand, while the situation is reversed for the double-compartment ligands; (viii) the correlation of the d-d band position of copper(II) with the displacement of copper(II) from the least-squares basal plane has been checked and it has been found that the correlation is not straightforward.…”

“…The first example of a 3d-silver(I) compound, which is a trinuclear cocrystal of diphenoxo-bridged Cu II Ag I and a mononuclear Cu II moiety, has been reported from a double-compartment (3-ethoxysalicylaldehyde-diamine) ligand [49]. Recently, the following types of nine copper(II)-silver(I) compounds derived from singlecompartment (salicylaldehyde-diamine or 2-hydroxyacetophenone-diamine; H 2 L single ) and double-compartment (3-methoxy/ ethoxysalicylaldehyde-diamine; H 2 L double ) Schiff base ligands [46] have been reported: (i) one trinuclear Cu II Ag I Cu II system; (ii) three dimer-of-dinuclear type [Cu II Ag I ] 2 systems where [Cu II L single/double Ag I (NO 3 [1,46,49]. As already discussed, both 4 and 5 are dimer-of-dinuclear compounds.…”