Abstract Supramolecular chemistry is a field of scientific exploration that probes the relationship between molecular structure and function. It noncovalent bond, which forms basis highly specific recognition, transport, regulation events actuate biological processes. The classic design principles supramolecular include strong, directional interactions like hydrogen bonding, halogen cation–π complexation, as well less forces ion pairing, π–π, solvophobic, van der Waals potentials. In recent...

A well-defined two-step relaxation, described by the sum of two modified Debye functions, is observed in a new alkoxido-bridged linear tetranuclear DyIII aggregate showing single-molecule magnet behavior with remarkably large energy barrier. This compound represents model molecular clear relaxation evidenced frequency-dependent susceptibility, which therefore may stimulate further investigations regarding dynamics lanthanide-based systems.

Anions are essential species in biological systems and, particularly, enzyme–substrate recognition. Therefore, the design and preparation of anion receptors is a topical field supramolecular chemistry. Most host–guest successfully developed based on noncovalent (ionic hydrogen-bonded) interactions between anions ammonium-type functionalities or Lewis acid groups. However, since past 5 years, an alternative route toward synthesis efficient hosts has emerged, namely, use "anion–π" involving...

Anion–π interactions have been receiving a great deal of attention from the scientific community for past five years. This type non-covalent bond is being recognized as supramolecular interaction by chemists. Remarkably, status lone pair(lp)-π interaction, namely bonding association between neutral electron-rich molecule and an electron-poor π ring, hardly studied. The importance lp–π was clearly evidenced in number biological systems more than ten years ago; amazingly, only few examples...

[CuBr2(2,2'-bipyridine)] catalyses the selective and very mild aerobic oxidation of primary alcohols to aldehydes in acetonitrile:water (2:1) presence 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) a base as cocatalysts.

Abstract A novel and very mild method for the oxidation of primary alcohols to aldehydes with excellent conversions has been developed. The reaction is carried out under air at room temperature catalysed using a [copper(II)‐(N ligand) n ] complex TEMPO base as co‐catalysts. In this paper, performance series N‐containing ligands, well different copper(II) salt precursors in solvents are reported. Best results obtained acetonitrile/water solvent catalyst generated situ from Cu(II) weak or...

A particularly challenging task is the design of anion receptors, because anions are larger than cations and pH- solvent-sensitive. The first host for anionic guests a dendritic octadentate N ligand, which upon reaction with CuCl2, encapsulates chloride ions (Cl6, see picture) as by means anion–π interactions in an electron-deficient cavity formed four pyridine rings.

Over the past five years, spin-crossover (SCO) phenomenon has experienced a clear new lease of interest from scientific community coinciding with recent publication remarkable advances. This perspective paper describes illustrative examples SCO systems, published during twelve months, showing aspects unique and very appealing behaviour these molecular switches, which may find interesting applications in near future.

A unique purely lanthanide-based single-molecule magnet (SMM) with an oxalate bridge has been designed through a rational synthetic approach. This strategy opens up new opportunities to design SMMs the premeditated choice of blocking ligand and suitable bridge.

Chemical nucleases based on the transition-metal ions cleave DNA hydrolytically and/or oxidatively, with or without added reductant. We report here novel cleavage properties of highly water-soluble, square-planar [Cu(Hpyrimol)Cl] complex, together results cytotoxicities toward selected cancer cell lines. The copper complex cleaves PhiX174 supercoiled efficiently any reductant and shows high L1210 murine leukemia A2780 human ovarian carcinoma lines that are sensitive resistant to cisplatin....

Anion−π interactions are increasingly reported in the recent literature. Although many of these examples described to be unique, a careful look Cambridge Structure Database reveals that not uncommon but fact have been overlooked past.

Abstract A new metal–organic framework (MOF) with amino groups situated inside the pores has been synthesized. This MOF modified by post‐synthesis two different functionalities. The crystal structures of functionalized MOFs clearly demonstrate that it is possible to transform cavities a without modifying its original 3D structure. These unprecedented results open up tremendous possibilities in field chemistry because many potential applications fields catalysis, material science...

The two-step spin crossover of a new mononuclear iron(II) complex is studied by magnetic, crystallographic and calorimetric methods revealing two successive first-order phase transitions an ordered intermediate built the repetition unprecedented [HS–LS–LS] motif.

Over the past 10 years, anion–π interaction has been recognized as an important weak force that may occur between anionic systems and electron-deficient aromatics. Lately, this supramolecular contact experienced a rapidly growing interest, reflected by numerous recent literature reports. The present paper highlights tremendous progress achieved in field emphasizing three studies involving interactions published 2010. In addition, pioneering search of Protein Data Bank (PDB) reveals short...

Three double phenoxido-bridged dinuclear nickel(II) complexes, namely [Ni2(L1)2(NCS)2] (1), [Ni2(L2)2(NCS)2] (2), and [Ni2(L3)2(NCS)2] (3) have been synthesized using the reduced tridentate Schiff-base ligands 2-[1-(3-methylamino-propylamino)-ethyl]-phenol (HL1), 2-[1-(2-dimethylamino-ethylamino)-ethyl]-phenol (HL2), 2-[1-(3-dimethylamino-propylamino)-ethyl]-phenol (HL3), respectively. The coordination compounds characterized by X-ray structural analyses, magnetic-susceptibility...

A series of isostructural three-dimensional metal-organic frameworks [Pr2(N-BDC)3(dmf)4]∞ (1), {[Eu2(N-BDC)3(dmf)4]·2DMF}∞ (2·2DMF), [Gd2(N-BDC)3(dmf)4]∞ (3), {[Tb2(N-BDC)3(dmf)4]·2DMF}∞ (4·2DMF), {[Dy2(N-BDC)3(dmf)4]·2DMF}∞ (5·2DMF) (N-H2BDC = 2-amino-1,4-benzenedicarboxylic acid; DMF N,N′-dimethylformamide) with cubic 412·63 topology have been synthesized using solvothermal conditions. The networks were generated via formation a dinuclear Ln2 secondary building block, involving the...

Abstract Interest in supramolecular chemistry has grown significantly during the past two decades. In this context, hydrogen bonding and/or coordinative interactions have been extensively used to generate self‐assembled one‐, two‐ or three‐dimensional polymeric networks. Crystal structure prediction progressed tremendously, and challenge for contemporary chemist is now produce custom‐made functional (and multifunctional) materials involving intermolecular interactions. Since early 1990s,...