Bimetallic silicon chemistry

Functional ligands and complexes for new structures, homogeneous catalysts and nanomaterials

“…is by definition not possible with mononuclear systems. This innovation may be illustrated by the discovery of the bridging behaviour of alkoxysilyl ligands which opens considerable perspectives not only in molecular synthetic chemistry but also in homogeneous catalysis and material sciences [77], and by the recently delivered proof that the ubiquitous phosphine [79] and silyl ligands [80], which are related by the isolobal analogy [81], can also behave as bridging ligands, a situation that was predicted back in 1989 in the former case [82]. The potential of cluster complexes to mediate unique bond forming/breaking reactions [83] or of heterobimetallic complexes to display reactivity patterns that are unknown for their homometallic analogs, as recently observed in the dimerization of methylacrylate promoted by a Ni-Mo complex [84] is also noteworthy.…”

“…25 years ago [7], although the phenomenon itself had been observed earlier [8]. It was first investigated in mononuclear metal complexes but this concept can easily be extended to dinuclear complexes [9] and metal clusters [10] where the labile coordination site does not need be at the metal ligated by the strong donor D but could be at an adjacent site [Scheme 2(B)]. It should be emphasized that hemilability is not an intrinsic property of the sole ligand but implies the metal-ligand couple.…”

Synthesis, characterization and antimicrobial activity of new Cu(II) and Zn(II) complexes with Schiff bases derived from trimethylsilyl-propyl-p-aminobenzoate

“…From this perspective, bimetallic or heterobimetallic silyl complexes were noted for their special structural properties as a result of the affinity of ligands for metal ions. Such compounds combine the properties of both metal-metal and metal-ligand bonds [12,13]. On the other hand, the chemistry of silicon-based ligands with different donor atoms (N, O or S) in the structure has been effectively developed in the last period, varying the range and the coordination mode of transition metals to these ligands.…”

A Theoretical Study on PdIIComplexes Containing Hemilabile Pyrazole‐Derived Ligands

“…(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) refers to a situation where there is a competition between a labile donor center and an external solvent molecule. Although this phenomenon was first studied in mononuclear complexes, it has been expanded to dinuclear [11] and polynuclear ones, particularly to metal clusters. [12] It should be pointed out that, although homofunctional bidentate ligands such as R 2 N(CH 2 ) n NR 2 or R 2 P(CH 2 ) n PR 2 could coordinate in monodentate or bidentate forms, they are not considered hemilabile since their coordination mode depends on the metal center and the effects of the coordinated ligands.…”