Novel primary amide-based cationic metal complexes: green synthesis, crystal structures, Hirshfeld surface analysis and solvent-free cyanosilylation reaction

Abstract

Using a new primary amide ligand 2-BPEG, four novel complexes of Cu(ii), Zn(ii) and Cd(ii) have been synthesized and fully characterized. The Cd(ii) analogue acts as an excellent heterogeneous catalyst for the solvent-free cyanosilylation reaction of an aldehyde with TMSCN.

A Three‐Dimensional Pentanuclear Co(II) Coordination Polymer: Structural Topology, Hirshfeld Surface Analysis and Magnetic Properties

“…To explore the non‐covalent interactions between the Co II framework and water molecules of the lattice, Hirshfeld surface (HS) analysis of CP 1 was carried out. Several types of interactions advocate that the van der Waals and/or hydrogen bonding interactions play the major role in establishing the crystal packing [32,33] . The HS analysis was investigated on the asymmetric unit of CP 1 by generating 3D image of d norm (normalize contact distance), shape index and 2D images of finger print plots [34] .…”

“…Several types of interactions advocate that the van der Waals and/or hydrogen bonding interactions play the major role in establishing the crystal packing. [32,33] The HS analysis was investigated on the asymmetric unit of CP1 by generating 3D image of d norm (normalize contact distance), shape index and 2D images of finger print plots. [34] Hirshfeld d norm was mapped in the color scheme of red (d norm = À 0.819 Å) to blue (d norm = 1.120 Å) (Fig- ure 8a).…”

Topologically Driven Pore/Surface Engineering in a Recyclable Microporous Metal–Organic Vessel Decorated with Hydrogen-Bond Acceptors for Solvent-Free Heterogeneous Catalysis

“…The intriguing fundamental structural aspects and the practical applications of metal–organic frameworks (MOFs) have attracted a lot of attention in the field of porous materials in the past few decades. Furthermore, the close structure–function relationship and the ease of obtaining a multitude of structures by slight moderations in the dictating ligand system have led to an explosion of studies on these porous structures beyond expectations. − These porous structures have displayed their potential in various applications such as gas sorption and separation, − water sorption and purification, , chemical and biosensing, , drug delivery, , and heterogeneous electro- and organocatalysis. − As heterogeneous catalysts, MOFs are particularly advantageous for catalyzing multicomponent reactions, which involve different substrates coming together and selectively reacting in a complex reaction mixture.…”

“…In our continued efforts to develop catalytic systems and green methods for various organic transformations involving less hazardous solvents or no solvent, − ,− we developed diverse heterogeneous catalysts with Lewis acid and/or hydrogen-bond-donating abilities. We have now focused on the development of catalysts with both hydrogen-bond-accepting moieties and Lewis acid centers for their utilization in organic transformations.…”

Two Zn(II)/Cd(II) Coordination Polymers as Recyclable Heterogeneous Catalysts for an Efficient Room-Temperature Synthesis of α-Aminonitriles via the Solvent-Free Strecker Reaction

“…In this regard, the unsaturated metal centers (UMCs) that can be either pre-existing or created upon activation, as Lewis acid sites, provided a direction for the development of new catalysts. , The first such example was reported by Fujita and co-workers in the cyanosilylation reaction of benzaldehyde with cyanotrimethylsilane to produce cynohydrins . Inspired by this breakthrough development, there have been various successful attempts for the utilization of MOFs/CPs for the cyanosilylation reaction and other similar reactions, such as Mukaiyama-aldol reaction, Knoevenagel condensation, ring-opening reaction, redox reaction, and carbon dioxide (CO 2 ) fixation. − Moreover, the use of MOFs/CPs as the heterogeneous catalyst in multicomponent reactions to synthesize biologically and pharmacologically essential products is also explored. − …”