Metamagnetism in hydrophobically induced carboxylate (phenylmalonate)-bridged copper(II) layers

Self-assembly of copper(II) ions, phenylmalonate and pyrimidine yields the layered compound [Cu(pym)(Phmal)]n ( 1) where intralayer ferro- and interlayer antiferromagnetic interactions occur with three-dimensional antiferromagnetic ordering at Tc = 2.15 KLloret Pastor, Francisco, [email protected] ; Julve Olcina, Miguel, [email protected]

Single chain magnet behaviour in an enantiopure chiral cobalt(II)–copper(II) one-dimensional compound

The self-assembly of an enantiomerically pure, chiral dianionic oxamatocopper(II) complex with cobalt(II) ions leads to neutral oxamato-bridged heterobimetallic chains that combine chirality and slow magnetic relaxation, providing thus the first example of ‘‘chiral single chain magnets (CSCMs).Ruiz Garcia, Rafael, [email protected] ; Lloret Pastor, Francisco, [email protected]

Self-assembly and magnetic properties of a double-propeller octanuclear copper(II) complex with a meso-helicate-type metallacryptand core

An octanuclear copper(II) complex possessing a dimer-of-tetramers structure self-assembles from a binuclear oxamatocopper(II) metallacryptand of the meso-helicate type; its magnetic behaviour is consistent with its unique double-propeller molecular topology.Pardo Marín, Emilio José, [email protected] ; Julve Olcina, Miguel, [email protected] ; Lloret Pastor, Francisco, [email protected] ; Ruiz Garcia, Rafael, [email protected]

Metamagnetism in hydrophobically induced carboxylate (phenylmalonate)-bridged copper(II) layers.

Self-assembly of copper(II) ions, phenylmalonate and pyrimidine yields the layered compound [Cu(pym)(Phmal)]2 (1) where intralayer ferro- and interlayer antiferromagnetic interactions occur with three-dimensional antiferromagnetic ordering at To = 2.15 K.Peer reviewe

Predisposition in Dynamic Covalent Chemistry: The Role of Non-Covalent Interactions in the Assembly of Tetrahedral Boronate Cages

Directional bonding strategies guide the design of complex molecular architectures, yet challenges arise due to emergent behavior. Rigid structures face geometric constraints and sensitivity to mismatches, hindering the efficient assembly of molecular organic cages (MOCs). Harnessing intramolecular non-covalent interactions offers a promising solution, broadening geometrical possibilities and enhancing adaptability to boost assembly yields. However, identifying these interactions remains challenging, with their full potential sometimes latent until final assembly. This study explores these challenges by synthesizing boronic acid tripods with varied oxygen positions at the tripodal feet and investigating their role in assembling tetrahedral boronate MOCs. Our results reveal substantial differences in the assembly efficiency among tripods. While the building blocks with oxygen in the benzylic position relative to the central aromatic ring form the MOCs in high yields, those with the oxygen atom directly bound to the central aromatic ring, only yield traces. Through X-ray crystallography and DFT analyses, we elucidate how intramolecular interactions profoundly influence the geometry of the building blocks and cages in a relay-like fashion, highlighting the importance of considering intramolecular interactions in the rational design of (supra)molecular architectures.Grants (PID2021-128047NB−I00, PID2022-139318NB−I00 and RED2022-134287-T) were funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”. M. R. thanks the Cabildo de Tenerife for a contract under the Plan Estratégico de Investigación Científica 2023 supported by the Fondo de Desarrollo de Canarias (FDCAN). The authors thank Dr. Antonio Hernández Daranas for his valuable help with DOSY-NMR spectroscopy and fruitful discussions.Peer reviewe

Dryness sensitive porous 3d-4f metal-organic framework with unusual dynamic behaviour

A new three-dimensional heteronuclear metal-organic framework has been synthesized using the 1,2,4,5-benzenetetracarboxylate ligand as a linker and Pr(iii)-Cu(ii) dinuclear units as nodes. The resulting structure shows an unexpected dynamic behaviour, where the volume of the crystal structure is shrunk by 11.5% in a dryness atmosphere. © 2012 The Royal Society of Chemistry.This work was supported by the Ministerio Español de Ciencia e Innovación through projectsMAT2010-16981, DPI2010-21103-C04- 03 and ‘‘Factoría de Cristalización’’ (Consolider-Ingenio2010, CSD2006-00015) and by the Gobierno de Canarias through projects PIL2070901 and structuring NANOMAC.Peer Reviewe

Metal-Organic Frameworks in Green Analytical Chemistry

Metal-organic frameworks (MOFs) are porous hybrid materials composed of metal ions and organic linkers, characterized by their crystallinity and by the highest known surface areas. MOFs structures present accessible cages, tunnels and modifiable pores, together with adequate mechanical and thermal stability. Their outstanding properties have led to their recognition as revolutionary materials in recent years. Analytical chemistry has also benefited from the potential of MOF applications. MOFs succeed as sorbent materials in extraction and microextraction procedures, as sensors, and as stationary or pseudo-stationary phases in chromatographic systems. To date, around 100 different MOFs form part of those analytical applications. This review intends to give an overview on the use of MOFs in analytical chemistry in recent years (2017–2019) within the framework of green analytical chemistry requirements, with a particular emphasis on possible toxicity issues of neat MOFs and trends to ensure green approaches in their preparation